Asolution of 0.10 m acetic acid and 0.10 m sodium acetate has a ph of 4.76. determine the pkaof acetic acid. what is the pkafor acetic acid?

Answer : The  pKa for acetic acid is, 4.76

Explanation : Given,

Concentration of acetic acid (acid) = 0.10 M

Concentration of sodium acetate (salt) = 0.10 M

The equilibrium reaction will be:

Using Henderson Hesselbach equation :

Now put all the given values in this expression, we get:

Therefore, the pKa for acetic acid is, 4.76

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