What is the total concentration of an acetic acid solution (ch3cooh) with a ph of 3.5? acetic acid ka = 1.76 x 10-5 m?

The dissociation reaction of acetic acid is as follows:

The acid dissociation constant K_{a} is .

Let the initial concentration of acid be A, and concentration of and be zero.

After dissociation, concentration of acid becomes A-x and that of both and becomes x.

Expression for acid dissociation constant will be:

pH of solution is 3.5, thus, concentration of hydrogen ion can be calculated as follows:

On rearranging,

Since,

Thus,

and,

Putting the values, in expression for acid dissociation constant,

On rearranging,

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