A titration between sodium hydroxide (NaOH) and acetic acid (CH₃COOH) will have two equivalence points. The first equivalence point will be when the acid is completely neutralized, and the second will be when the base is completely neutralized.
The first equivalence point occurs when the moles of sodium hydroxide (NaOH) is equal to the moles of acetic acid(CH₃COOH). In the titration sodium hydroxide has neutralized all of the acetic acid. The second equivalence point occurs when the moles of sodium hydroxide is equal to the moles of water. The reason for two equivalence points is that acetic acid is a weak acid and water is a strong base.
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40. Consider the following unbalanced equation.
FeCl₂ + Na₂CO3 → FeCO3 + NaCl
When the equation is completely balanced
using smallest whole numbers, the coefficient
of NaCl is
(1) 6 (2) 2
41. Consider the followi
(3) 3
(4) 4
Answer: 2
Explanation: For the equation to be balanced, the elements or compounds from the reactant and product sides must be equal.
Everything else was equal except the Na and Cl which on the reactant side it had 2 molecules each and on the product side 1 molecule.
All you have to do is add 2 Infront of NaCl on the product side to make the reaction balance.
Given the equation representing a reaction at
equilibrium:
N2(g) + 3H2(g) <==> 2NH3(g) + energy
Which change causes the equilibrium to shift to
the right?
(1) decreasing the concentration of H2(g)
(2) decreasing the pressure
(3) increasing the concentration of N2(g)
(4) increasing the temperatur
Increasing the concentration of N2(g) will causes the equilibrium to shift to the right.
Chemical equilibria can be shifted by changing the conditions that the system experiences. We say that we "stress" the equilibrium. When we stress the equilibrium, the chemical reaction is no longer at equilibrium, and the reaction starts to move back toward equilibrium in such a way as to decrease the stress.
According to Le Chatelier's principle, a change in one of the variables that describe a system at equilibrium produces a shift in the position of the equilibrium that counteracts the effect of this change.
In the synthesis of ammonia the equilibrium will shift to right only when we increase the concentration of N2(g). Because increasing nitrogen gas causes more ammonia to be produced, so the concentration of ammonia must increase.
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Draw a diagram to show the arrangement of particles in a solid, a liquid and a gas. What can be interpreted from the distance between the constituent particles.
solid(particles are appropriately packed) in solids there is no distance between the constituent particles
liquid(particles are closely packed).
gas(particles move freely) .
What kind of particle configurations can you find in solid, liquid, and gas?In a gas, the particles are evenly spaced out and not in any particular order. There is no regular arrangement of liquid next to one another. solids are regularly arranged and closely packed.
We can infer from the diagram that there is no space between the individual particles that make up solids. Without any intermolecular voids between the individual molecules, it is a completely packed structure.
In contrast, the particles in liquids are more closely packed than those in gaseous fluids, albeit they are more loosely packed than those in solids. We can now observe that there is a significant intermolecular gap between the constituent particles of gases. They are packed more flimsily than
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in a mixture of an alcohol and ketone of equal molecular weight, which will have the larger rf value and why?
The ketone will have a larger rf value because it is more polar than the alcohol.
Does more polarity suggest a greater or lesser Rf value?
Calculating the Rf value is possible if you can see the spots.The identity and properties of the various compounds can be established using the Rf values.Since more polar compounds have a stronger affinity for the polar solid phase, they will have smaller Rf values.Rf values are typically higher for low-polarity chemicals compared to higher-polarity ones. Generally speaking, as the polarity of a compound increases, so does its absorptivity (i.e., the more polar the compound, the stronger it binds to the adsorbent).To learn more about Rf values, follow the link https://brainly.com/question/26639192
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11) the compound: a) is considered a d sugar. b) has 3 chiral carbons. c) is considered an aldose sugar d) all of the above are correct e) none of the above are correct
The compound: d) all of the above are correct ( considered a d sugar, has 3 chiral carbons, is considered an aldose )
As a general rule, chiral carbon centres are carbon atoms positioned at the four corners of a tetrahedron and attached to four distinct substituents. Steeogenic carbons and asymmetrical carbon atoms are other names for chiral carbon atoms. The definition of an aldose is a monosaccharide (simple sugar) with a carbon backbone chain, an aldehyde group on the carbon atom at the end, and hydroxyl groups connected to all of the other carbon atoms. Aldoses differ from ketoses, which are considered ketones because they have the carbonyl group away from the end of the molecule. The Lobry-de Bruyn-van Ekenstein transition can isomerize aldoses into ketoses.
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Discuss energy use in animals. In your discussion, be sure to :
- Identify the type of protein molecules used to digest food
- Identify the organelle where energy from nutrients is released
- State one inference that can be made concerning a cell that has many of these organelles.
The type of protein molecules that is been used to digest food in the organism are:
chymotrypsin trypsin .The organelle where energy from nutrients is released is the Mitochondria.
One inference that can be made concerning a cell that has many of these organelles is that te utilization of the energy is balanced.
What is the organelle where energy from nutrients is released?The organelle where energy from nutrients is released is the Mitochondria , this organelles can be described as the one that look tiny inside cells and this is very essential in the cell because it helps in the p[roces of releasing energy from food.
It should be noted that this process is been refferd to as process of cellular respiration and this is the reason why the biologist do referred to mitochondria as the powerhouses of the cell because it involves the use of energy.
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1.96 g h2 is allowed to react with 9.78 g n2 , producing 1.46 g nh3 . part a what is the theoretical yield in grams for this reaction under the given conditions?
The theoretical yield in grams for this reaction under the given conditions is 11.05g.
What is theoretical yield?The theoretical yield is the greatest amount of a product that can be produced in a chemical reaction. It can be determined using the chemical equation with balance. the relative formula mass, mass, and mass of the limiting reactant, as well as the relative formula mass of the result
Given,
Mass of H₂ = 1.96 g
Mass of N₂ = 9.78 g
Molar mass of H₂ = 2 g/mol
Molar mass of N₂ = 28 g/mol
Lets calculate the moles of N₂ and H₂,
Moles of H₂ = [tex]\frac{given mass}{molar mass}[/tex]
H₂ = [tex]\frac{1.96}{2}[/tex]
H₂ = 0.98 mol
same for moles of N₂ = [tex]\frac{given mass}{molar mass}[/tex]
N₂ = [tex]\frac{9.78}{28}[/tex]
N₂ = 0.349 mol
Now, calculate limiting and excess reagent.
The balanced chemical equation is:
3H₂ + N₂ = 2NH₃
From the balanced reaction we conclude that.
As, 3 mole of H₂ react 1 mole of N₂
So, 0.98 moles of H₂ react with 0.98/3 = 0.32 moles of N₂
From this we conclude that, N₂ is an excess reagent because the given moles are greater than the required moles and H₂ is a limiting reagent and it limits the formation of product.
Let us calculate the moles of NH₃
From the reaction, we conclude that
As, 3 mole of H₂ react to give 2 mole of NH₃
So, 0.98 mole of H₂ react to give [tex]\frac{2}{3}[/tex]×0.98 = 0.65 mole of NH₃
Now we have to calculate the mass of NH₃
Mass of NH₃ = Moles of NH₃ × Moles of NH₃
Molar mass of NH₃ = 17 g/m
Mass of NH₃ = 0.65 × 17
Mass of NH₃ = 11.05g
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Help!!
Predict the missing component in the nuclear equation.
The missing component in the nuclear equation is [tex]{{0} \atop {-1}} \right.[/tex]e.
Nuclear reactions are processes in which one or more nuclides are produced from the collisions between two atomic nuclei or one atomic nucleus and a subatomic particle. The nuclides produced from nuclear reactions are different from the reacting nuclei (commonly referred to as the parent nuclei).
In the given reaction in order to balance the reaction we can see that their mass numbers are same so the difference between them is = 0, and the difference in their atomic number is 91-90 = 1, hence the component is the [tex]\beta[/tex] particle that is formed.
This type of nuclear reaction is know as [tex]\beta[/tex]decay nuclear reactions
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you are working diligently in the chemistry laboratory when suddenly a small explosion occurs in the rear of the room, immediately and automatically capturing your attention. this is an example of
When you are working diligently in the chemistry lab, when suddenly a small explosion occurs in the rear of the room , immediately and automatically capturing your attention, this is an example of Reflexive attention.
What is reflexive attention?
Reflexive attention is essentially a semi-autonomous decision making system.
The brain regulates vital body functions such as heartbeat, movements and learning processes. Also, the brain controls the psychological processes such as memory, wakefulness, and attention.
Attention is categorized into two groups; voluntary and reflexive.
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What is social anxiety disorder?
Answer:
You might get nervous and anxiety about meeting up in society
it turns out that ozone, o3 , has a small dipole moment. how is this possible, given that all the atoms are the same?
Ozone has dipole moment even though all the atoms are the same because of the presence of lone pair on the central oxygen atom.
The dipole moment of any molecules is the product of the charge on the either side of the molecule and the distance between them.
As we know, Ozone contains 3 oxygen atoms.
The presence of lone pair on the central oxygen atom bends down the molecule of ozone which indeed give result to the a bent symmetry of ozone molecule. As we know, if a molecule is bent then it is very lightly to have some dipole moment.
Even though there are all the items of same kind but the charge on all the three atoms is different which gives contribution in the formation of the dipole moment. So, we can conclude here that the small dipole moment in ozone molecule is observed because of the presence of the lone pair and symmetry of the molecule.
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The mystery element is in group 2 period 6. It has an atomic weight of
137.33. What element is this, and how many protons and electrons and neutrons does it have
The element that is present in group 2 and period 6 of the periodic table is Barium. The number of electrons here is 56, proton is 56 and neutron is 81.
Periodic table is systematic arrangement of the all the known elements, where the elements are arranged in the order of their atomic number. This table helps the for quick understanding of individual properties such as as their mass, electron number, electron configuration and their unique chemical properties.
The columns of the periodic table are called the groups. There are 18 groups in total. Members of the same group in the table have the same number of electrons in the outermost shells of their atoms and form bonds of the same type.
The horizontal rows are called periods. Periods represents to the relationship of orbitals, or likely areas in which electrons will be found, inside the outermost shell of the atom. As we go down the period the more of electron cloud around the nucleus increases. There are total 7 periods in the periodic table.
If we read the periodic table then we will understand that the element which is present in group 2 and period 6 with atomic weight 137.33 is Barium. As the atomic number of Barium is Z=56 so Np=Ne=56. remaining is 81 which is the number of neutrons.
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potassium sulfate and calcium chloride
Express your answer as a chemical equation. Identify all of the phases in your answer. Enter NOREACTION if no reaction occurs.
Potassium sulfate and Calcium chloride reacts with each other to form Potassium chloride and Calcium sulphate. The chemical yield in this process is about 99%.
The balanced chemical reaction for the reaction of Potassium sulfate and Calcium chloride is given as:
CaCl₂ + K₂SO₄ → CaSO₄ + 2KCl
The reaction between Potassium sulfate and Calcium chloride is a double displacement type of reaction.
Double displacement reaction is a type of reaction where one part of the reactant is replaced by the another part of the reactant.
The general form of double displacement reaction is written as:
AB + CD → AD + BC
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the total translational kinetic energy of 17 moles of an ideal gas is 198,242 j. calculate the gas temperature in kelvin
The total translational kinetic energy of 17 moles of an ideal gas is 198,242 j . the gas temperature in kelvin is 937 K.
Given that :
total translational kinetic energy = 198242 J
moles = 17 mol = 17 × 6.023 × 10²³
Total kinetic energy = ( 3/2 KT ) × no. molecules
198242 = ( 3/2) ( 1.38 × 10⁻²³ ) T × 17 × 6.023 × 10²³
T = 198242 / 211.84
T = 937 K
Thus, The total translational kinetic energy of 17 moles of an ideal gas is 198,242 j . the gas temperature in kelvin is 937 K.
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an important intermediate reaction in the industrial production process of nitric acid is shown. what is the theoretical yield of h2o (18.02 g/mol) if 45.0 kg of nh3 (17.04 g/mol) reacts with excess o2 (32.00 g/mol)?
The theoretical yield of H₂O in this reaction is 31.69 Kg.
The chemical equation of the reaction of NH₃ and O₂ is,
NH₃ + O₂ → NO + H₂O
Now, balancing this equation,
4NH₃ + 5O₂ → 4NO + 6H₂O
So, as per reaction, we can see,
NH₃ is limiting reagent, hence it will decide the extent of products,
4 moles of NH₃ reacts completely with two oxygen to form 6 moles of water.
Moles = Mass reacted/formed/molar mass.
Molar mass of NH₃ = 17.04 g/mol
Reacted mass of NH₃ = 45000 g.
Molar mass of H₂O is 18 g/mol
Now, can write,
4 x (mass of NH₃ reacted/molar mass of NH₃) = 6 x (mass of H₂O formed/molar mass of H₂O)
4 x (45000/17.04) = 6 x (Formed mass of H₂O/18)
Formed mass of H₂O = 31690.14 grams.
Formed mass of H₂O = 31.69 Kg.
So, the theoretical yield of H₂O is 31.69 Kg.
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How many electrons are located in the outermost orbit in the bohr model of a boron atom?.
The number electrons in the outermost orbit in the Bohr model of a Boron atom is 3. The outermost orbit of the electrons of a Boron atom is in the L-shell.
What is Bohr model?The Bohr model is a structural model of an atom where the electrons revolve around the nucleus of an atom in distinct circular orbits (shells). Each shell has a maximum number of electrons by this formula: 2n², where n is the principal quantum numbers (n = 1, 2, 3, 4, ...).
The 1st orbit called K-shell has the maximum electrons 2(1)² = 2.The 2nd orbit called L-shell has the maximum electrons 2(2)² = 8.The 3rd orbit called M-shell has the maximum electrons 2(3)² = 18.The 4th orbit called N-shell has the maximum electrons 2(4)² = 32.The 5th orbit called O-shell has the maximum electrons 2(5)² = 50.The composition of numbers of electrons in each shell of an atom is called electronic configuration.
Boron is an atom with the atomic number 5. So, it has 5 electrons. The electronic configuration is
K-shell = 2 electronsL-shell = 3 electronsL-shell is the outermost orbit in the Bohr model of a Boron atom.
Hence, the number of electrons in the outermost orbit in the Bohr model of a Boron atom is 3.
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how many milliliters of a stock solution of 2.00m mgso4 would you need to prepare 100.0ml of 0.400m mgso4
The volume of 2.00 M MgSO₄ is 20.0 mL.
Parameter
M₁ = 2.00 MM₂ = 0.400 MV₂ = volume of 0.400 M MgSO4 = 100.0 mLIf we added water to the first solution, the concentration changed but the mole in that solution didn't change.
Formula between mole, volume, and concentration (molarity)
[tex]M = \frac{n}{V}[/tex]
n = M×V
n = moleV = volume (mL)M = concentration (Molar)n₁=n₂
M₁×V₁ = M₂×V₂
2.000×V₁ = 0.400×100.0
2.000×V₁ = 40.0
[tex]V_1 = \frac{40.0}{2.000}[/tex]
V₁ = 20.0 mL
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in order to create a 0.500 m 0.500 m solution of h c l hcl for use in a laboratory experiment, how much distilled water must be used to dilute 100 ml 100 ml of a 3.00 m h c l 3.00 m hcl solution?
For the necessary concentration, 500 ml distilled water must be added here.
Can we drink distilled water?You can consume distilled water, of course. Because it is flatter and less flavored as tap and bottled waters, you might not enjoy the taste. Businesses boil water, collect the steam, and then condense the liquid back to liquid to create distilled water. Minerals and pollutants are taken out of the water by this method.
Briefing:
Molarity= Volume /Moles
Moles of HCl present =100×10 −3 ×3=0.3
Required molarity =0.5
∴0.5= Volume /0.3
∴Volume=0.6 L=600 mL
Here, 600 mL total, 100 mL at the beginning
For the necessary concentration, 500 ml distilled water must be added here.
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hydroxylamine contains 42.41% n and 9.15% h by mass, with the remainder being oxygen. what is its empirical formula?
The empirical formula of hydroxylamine is Nitrogen 1, Hydrogen 3 and oxygen 1 (N1H3O1).
To find the empirical formula, we must first figure out the amount of oxygen present, which is equal to 100 minus the percentages of nitrogen and hydrogen present. Combining the values gives us the following outcome: The amount of oxygen present is expressed as 100 minus 42.41 and 9.15, which equals 48.44. Nitrogen is 42.41, contains 9.15 percent hydrogen, and has 48.44 percent oxygen. The smallest amount will be shared. When divided by 3.0275 and 3.0229, respectively, the least nitrogen value will equal nearly 1, which is nitrogen. 9.15 divided by 3.0275 = 3, and 3.0275 divided by 3.0275 equals 1 for oxygen and hydrogen. The nitrogen concentration in this instance is 1. 3. 1 points are needed to compare hydrogen to oxygen.
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the modern periodic table arranges the elements according to their atomic number and shared properties. if you wanted to predict which elements are explosive how would you organize the periodic table?
High explosive elements should be placed on the right side of the periodic table and lower explosive elements should be placed on the left side.
We will organize the periodic table starting from least explosive to high explosive just like the arrangement is done in the modern periodic table in which elements having lower atomic numbers are present on the left side of the periodic table whereas the elements having higher atomic numbers are placed on the right side of the periodic table.
What is the periodic table?
The periodic table is the tabular arrangement of all the chemical elements on the basis of their respective atomic numbers.
Why the periodic table is important?
The periodic table of elements puts all the known elements into groups with similar properties.
Thus, lower explosive elements are placed on the left and high explosive elements are placed on the right of the periodic table.
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g the conversion of carbon dioxide to carbonic acid can be catalyzed by carbonic anhydrase with an activation energy of 85.6 kj mol-1 at 25c. by what factor will the rate constant increase if the temperature is raised to 37 c?
The rate constant increase by the factor of 4 when temperature is increased from 25C to 37C and activation energy is 85.6KJ. This can be solved using Arrhenius equation.
What is Arrhenius equation?
Arrhenius equation explains the relation between temperature and rate of the reaction for many chemical and physical reactions. It is given by,
k = A x e^(-Ea/RT)
where k = rate of the reaction, Ea = activation energy, R = gas constant, T = temperature.
The increase in the rate of the reaction can be calculated by Arrhenius reaction when the 2 different temperatures are given.
log k2/k1 = Ea / 2.303R [T2-T1 / T2T1] = 85.6 / 2.303 x 8.314 [ 310 - 298 / 310 x 298] = 4.
Therefore, by using Arrhenius equation, the increase in the rate of the reaction when the temperature increased from 25C to 37C is by a factor of 4.
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PLS HELP!
How are names for ionic compounds with transition metals different from those without transition metals?
There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, ionic compounds with transition metals and ionic compounds without transition metals are named in the same way.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
Ionic compounds with transition metals are named with the same method as compounds without transition metals, except the charge of the metal ion is specified by a Roman numeral in parentheses after the name of the metal.
Therefore, ionic compounds with transition metals and ionic compounds without transition metals are named in the same way.
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a 125 g sample of lead at 85.0 c and a 320 g sample of silver at 34.0 c are added to 0.500 kg of water at room temperature (22.0 c) in an insulated container. assuming the system is thermally insulated, what is the final equilibrium temperature?
The final equilibrium temperature of the mixture of lead, silver, and water is 24.65°C. The result is obtained by using the Black's Principle.
What is Black's Principle?The Black's Principle states that heat released by a higher-temperature object is equal to the heat absorbed by a lower-temperature object. It can be expressed as
Q release = Q absorbs
Where
Q release is the heat released by high-temperature objects.Q absorb is the heat absorbed by low-temperature objects.The mass of lead is 125 g at 85°C, the mass of silver is 320 g at 34°C, and the mass of water is 0.5 kg at 22°C. All of them are mixed, so that the temperature of the lead and silver will fall and otherwise the temperature of water will rise.
The equation of the heat energy with the temperature change is
Q = m × c × ΔT
Where
m = massc = specific heat capacityΔT = change in temperatureThe data shows that:
c lead = 128 J/kg °Cc silver = 234 J/kg °Cc water = 4,186 J/kg °CThe equilibrium temperature is
Q release = Q absorbs
(m × c × ΔT)lead + (m × c × ΔT)silver = (m × c × ΔT)water
(0.125 × 128 × (85-T)) + (0.320 × 234 × (34-T)) = (0.500 × 4,186 × (T-22))
(16 × (85-T)) + (74.88 × (34-T)) = (2,100 × (T-22))
1,360 - 16T + 2,545.92 - 74.88T = 46,200 - 2,100T
2,190.88T = 50,105.92
T = 24.65°C
Hence, the final equilibrium temperature of the mixture is 24.65°C.
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if a non-diabetic person ingests carbon in the form of sugar, how is that carbon likely to be released from their body?
If a non-diabetic person ingests carbon in the form of sugar than carbon is likely to be released from their body in the form of CO₂.
The pancreas releases glucagon while the awareness of glucose inside the bloodstream falls too low. Glucagon causes the liver to transform stored glycogen (the multibranched polysaccharide of glucose in frame storage) into glucose, which is released into the bloodstream.
The absorption price of fructose alone from the small gut is slower than that of glucose. this is partially due to the differences in the absorption manner between the two monosaccharides. Glucose is absorbed from the intestine into the plasma thru more than one active glucose co-transporter protein.
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Which element has the ground state electronic configuration, 1s22s22p63s23p64s1 ?.
The given electronic configuration is of Potassium.
The electron configuration in atomic physics and quantum chemistry refers to the arrangement of electrons in orbitals around an atomic nucleus or the distribution of electrons within an atom or molecule.
One orbital can house a maximum of two electrons, and there are four different types of orbitals (s, p, d, and f). More electrons can be held in the p, d, and f orbitals since they contain various sub levels.
Thus, the given atomic configuration is 1s²,2s²,2p⁶,3s²,3p⁶4s¹.
by counting the number of electrons present in orbitals we can find out the atomic number of the atom because ,
no of electrons present = atomic number
thus, no of electrons = 2+2+6+2+6+1=19
the element with atomic number 19 is potassium.
thus, the given electronic configuration is of potassium.
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Water is a polar solvent and carbon tetrachloride (CCl4) is a nonpolar solvent. In which solvent is each of the following more likely to be soluble?a. NaNO3, ionicb. I2, nonpolarc. sucrose (table sugar), polard. gasoline, nonpolare. vegetable oil, nonpolarf. benzene, nonpolarg. LiCl, ionich. Na2SO4, ionic
One of the first ten compounds, carbon tetrachloride, is used in a variety of industrial manufacturing processes as well as in consumer products such as paints, adhesives, degreasers, and other things.
How about a summary of carbon tetrachloride?An organic molecule called carbon tetrachloride is made up of a core carbon atom that is encircled by four chlorine atoms arranged in a tetrahedron. Because of its extremely low melting point, it is found as a colorless liquid at ambient temperature. It has a wide range of uses, including in cleaning supplies, fire extinguishers, and fumigants. It has been discovered that large amounts of it can have negative health effects.
A substance's solubility refers to its capacity to dissolve in a certain solvent. The fundamental solubility rule tells us whether a given item dissolves in
It is a clear liquid that has a faintly perceptible sweet odor. It is also known as benziform, perchloromethane, methane tetrachloride, carbon chloride, and methane tetrachloride. The most common way to encounter carbon tetrachloride is as a colorless gas in the air. Both its inflammability and ease of dissolution in water are nonexistent.
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How to do this??
Ty for your help if you help!
Answer:
each element gains one proton as you move from left to right across a period, atomic number is the number of protons
careful not to confuse it with the mass number which is the number of protons and neutrons.
also remember that in any given element, the proton number is always equal to electron number as they have opposite charges that cancel off, this is why elements are neutral.
how many ml of propyl alcohol are required to make a 9.17% (v/v) aqueous solution in a 250. ml volumetric flask?
2,726.28 mL solution of propyl alcohol is required to make a 9.17% (v/v) aqueous solution in a 250. ml.
A solution's volume-by-volume percent concentration,
9.17% v/v is a measure of how many milliliters of solute it contains in 100 mL of solution.
In this case,
9.17% v/v solution will contain -
9.17 mL of solute for every 100 mL of solution.
This means that in order to have propyl alcohol required to make a 9.17% (v/v) aqueous solution in 250 ml of solute, you need to have
250 mL solute× 100 mL solution/ 9.17mL solute
=2,726.28 mL solution.
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an ammonia buffer solution contains 0.18 m nh4 and 0.27 m nh3. the pka of ammonium is 9.24. what is the ph of the buffer?
An ammonia buffer solution contains 0.18 m NH₄ and 0.27 m NH₃ the pka of ammonium is 9.24 and the pH of the buffer is 9.41
pH means a measure of how acidic or basic a substances or solution
Here given data is
Pka of NH₄ = 9.24
Concentration of NH₄ = 0.18 M
Concentration of NH₃ = 0.27 M
Then we have to calculate pH =?
The pH of buffer solution can obtain by using the Henderson Hassel Bach equation
pH = Pka + log [base]/[acid]
pH = 9.24 + log [NH₃]/[NH₄]
pH = 9.24 + log [0.27 M[/[ 0.18 M]
pH = 9.24 + log [1.5]
pH = 9.24 + 0.176
pH = 9.41
pH of the buffer is 9.41
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If the following elements were involved in a chemical reaction, which one would be most likely to form a cation?
O nitrogen (N)
potassium (K)
Ofluorine (F)
Ochlorine (CI)
Among elements that are involved in a chemical reaction, one that would be most likely to form a cation is : potassium (K)
Why potassium is cation?In the periodic table, potassium is one of the alkali metals which has a single valence electron in the outer electron shell. This valence electron is easily removed to create an ion with a positive charge that is a cation.
Halogens always form anions whereas alkali metals and alkaline earth metals form cations.
Cl- is an example of anion as Cl- atom is a chlorine atom that has gained one electron and has a negative charge of -1 since it has a full outer shell. A negatively charged ion fluorine is an anion.
Nitrogen is neither a cation nor an anion as it falls in the category of atom and atoms are electrically neutral.
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