g Select the correct order for concentrations of the following species present in a 1.0 mol L-1 solution of a salt of weak acid AH (The salt is AHCl; AH is the weak acid) Question 6 options: a) [AH ] > [A] ~ [H3O ] > [OH-] b) [AH ] ~ [H3O ] > [OH-] ~ [A] c) [A] > [AH ] > [H3O ] > [OH-] d) [A] > [AH ] ~ [OH-] > [H3O ] e) [AH ] ~ [H3O ] > [OH-] > [A]

Question

Chemistry

Donna Phillips

9 April, 23:15

g Select the correct order for concentrations of the following species present in a 1.0 mol L-1 solution of a salt of weak acid AH (The salt is AHCl; AH is the weak acid) Question 6 options: a) [AH ] > [A] ~ [H3O ] > [OH-] b) [AH ] ~ [H3O ] > [OH-] ~ [A] c) [A] > [AH ] > [H3O ] > [OH-] d) [A] > [AH ] ~ [OH-] > [H3O ] e) [AH ] ~ [H3O ] > [OH-] > [A]

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Answers (1)

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Dayanara Lynn · Answer 1

The correct answer is option (a) a) [AH ] > [A] ~ [H3O ] > [OH-]

Explanation:

Since AH is a weak acid, it will dissociate in lesser amount. So, less amount of A and H3O will be formed. The highest amount formed will be AH> A> [OH-]

As it is salt of weak acid and strong base. So pH is greater than 7 and [OH-]<[H+]