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jeyben [28]
2 years ago
13

Which is the right answer?

Chemistry
1 answer:
Talja [164]2 years ago
3 0

Answer:

i think its C

Explanation:

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Benzoic acid, c6h5cooh, has a ka = 6.4 x 10-5. what is the concentration of h3o+ in a 0.5 m solution of benzoic acid? 3.2 x 10-5
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The answer for this issue is: 
The chemical equation is: HBz + H2O <- - > H3O+ + Bz- 
Ka = 6.4X10^-5 = [H3O+][Bz-]/[HBz] 
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Ka = 6.4X10^-5 = x^2/0.5 
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(x is without a doubt little contrasted with 0.5, so the presumption above was OK to make) 
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