Question

The acid-dissociation constant for hypochlorous acid (HClO) is 3.0×10−8. Part A Calculate the concentration of H3O+...

The acid-dissociation constant for hypochlorous acid (HClO) is 3.0×10−8.

Part A

Calculate the concentration of H3O+ at equilibrium if the initial concentration of HClO is 8.6×10−3 M .

Express your answer using two significant figures.
[H3O+] =   M  

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Part B

Calculate the concentration of ClO− at equilibrium if the initial concentration of HClO is 8.6×10−3 M .

Express your answer using two significant figures.
[ClO−] =   M  

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Part C

Calculate the concentration of HClO at equilibrium if the initial concentration of HClO is 8.6×10−3 M .

Express your answer using two significant figures.
[HClO] =   M  

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Homework Answers

Answer #1

HClO + H2O ----------------> ClO- +   H3O+

8.6×10−3                                             0              0

8.6×10−3 - x                             x               x

Ka = x^2 / 8.6×10−3 - x

3.0×10^-8 = x^2 / 8.6×10−3 - x

x = 1.605 x 10^-5

[H3O+] = 1.6 x 10^-5 M

[ClO-] = 1.6 x 10^-5 M

[HClO] = 8.6 x 10^-3 M

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