The concentration of all species, the pH of the solution, and the strongest base is respectively given as)
a
C_HOCl=0.5C_H3O=1.137*10^{-7}ClO=1.137*10^{-4}b)pH=3.88
c)ClO-
What are the concentration of all species, the pH of the solution, and the strongest base?
Question Parameters:
a 0.50 M solution of HOCl at 25℃. pKa = 7.46 at 25â„
Generally, the equation for the Chemical Reaction is mathematically given as
HOCl=H30+ClO
Therefore
ka=\frac{H3O(ClO)}{HOCl}
Ka=10^{-7.46}
x.x/0.5-x=10^{-7.46}
x=1.317*10^{-4}
In conclusion
a)
the concentration HOCl
C_HOCl=0.5-1.137*10^{-4}
C_HOCl=0.5
the concentration H3O
C_H3O=1.137*10^{-7}
the concentration ClO
ClO=1.137*10^{-4}
b)
pH=-log(1.317*10^{-4})
pH=3.88
c)
The strongest base of the three is the
ClO-
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Answer:
D
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Answer:
F2: 1
NaBr: 2
NaF: 2
Br: 1
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What is the missing symbol in the following nuclear transformation
Answer:
the missing symbol is 2 b e
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If two boxes are pushed with the same amount of total force, one weighs 1kg & the other weights 100 kg, which box will accelerate faster
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Be sure to answer all parts. How many moles of water contain each of the following number of molecules?
Report your answer using appropriate number of significant figures.
a. 9.52 x 1026 molecules
_____ mol
b. 7.81 x 1022 molecules
_____mol
c. 2.5 % 1023 molecules
_____ mol
Answer:
1.520
1.333
15.899
Explanation:
its very easy
N = n x No
No = avogadro's number = 6.02 x 10²³
n = mol
a. 9.52 x 10²⁶ : 6.02 x 10²³ = 1.58 x 10³ (3 sig figs)
b. 7.81 x 10²² : 6.02 x 10²³ = 1.30 x 10⁻¹ = 0.130 (3 sig figs)
c. 2.5 x 10²³ : 6.02 x 10²³ = 0.42 (2 sig figs)
What is the number of molecules of CO2 in 0.236 moles?
Answer:
mole of CO2 = 6.023*10^23 molecules.
3 moles of CO2 = 3*6.023*10^23 molecules
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The temperature of a sample of iron increased by 23.1 °C when 267 J of heat was applied. What is the mass of the sample?
Answer:
25
Explanation:
go answer my question pls
Q = mcΔt
c iron = 0.449 (from table)
m = Q/cΔt
m = 267 /(0.449 x 23.1)
m = 25.74 g
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