The percentage deprotonation of a 0.110 M solution of benzoic acid (a weak, monoprotic acid) is...

The percentage deprotonation of a 0.110 M solution of benzoic acid (a weak, monoprotic acid) is 2.4%. What is the pH of the solution?

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Expert Solution

Let the acid be represented BH

BH (aq) <----> B- (aq) + H+ (aq)

Initial 0.11 0 0

equilibrium 0.11-X X X

Given X = 2.4 % of HA = ( 2.4/100) x 0.11 = 0.00264 = [H+]

pH= -log [H+]

= -log ( 0.00264) = 2.58

queen_honey_blossom answered 1 year ago

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