# Use the information below to answer the following question. What is the pH of a 0.100 M solution of benzoic acid?

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Use the information below to answer the following question. What is

the pH of a 0.100 M solution of benzoic acid?

Use the information below to answer the following question. What is

the pH of a 0.100 M solution of benzoic acid?

##### 1 Answer

#### Explanation:

Benzoic acid is a weak acid, whose dissociation we represent as:

Using the usual conventions,

Where

We have a quadratic in

I am not going to bother to do another approx. but perhaps you should; i.e. plug your first approx. back into the equation to see how the answer evolves.

And