Question

1.7 gm of NH, is dissolved in water and formed IL solution. POH of the solution is found to be 3, then kb (NA)
(A) 10-7
(B) 10-3
(C) 10-5
10-9​

Answer 1

Answer:

Explanation: First, because CH3COOH is a weak electrolyte and CH3COONa is a strong electrolyte, the major

species in the solution are CH3COOH (a weak acid), Na+ (which is neither acidic nor basic and is therefore a

spectator in the acid–base chemistry), and CH3COO– (which is the conjugate base of CH3COOH).

Second, [H+] and, therefore, the pH are

controlled by the dissociation equilibrium

of CH3COOH:

(We have written the equilibrium Using

H+(aq) rather than H3O+(aq) but both

representations of the hydrated hydrogen

ion are equally valid.)