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Q. Match the following species with the corresponding conjugate acid.

Species Conjugate acid

(i) ${NH}_{3}$ (a) ${CO}_{3}^{2-}$

(ii) ${HCO}_{3}^{-}$ (b) ${NH}_{4}^{+}$

(iii) ${H}_{2} {O}$ (c) ${H}_{3} {O}^{+}$

(iv) ${HSO}_{4}^{-}$ (d) ${H}_{2} {SO}_{4}$

(e) ${H}_{2} {CO}_{3}$

Equilibrium

A

$(\mathrm{i}) \rightarrow(\mathrm{e}),(\mathrm{ii}) \rightarrow(\mathrm{a}),(\mathrm{iii}) \rightarrow(\mathrm{b}),(\mathrm{iv}) \rightarrow(\mathrm{c})$

3%

B

$(\mathrm{i}) \rightarrow(\mathrm{b}),(\mathrm{ii}) \rightarrow(\mathrm{e}),(\mathrm{iii}) \rightarrow(\mathrm{c}),(\mathrm{iv}) \rightarrow(\mathrm{d})$

88%

C

$(\mathrm{i}) \rightarrow(\mathrm{c}),(\mathrm{ii}) \rightarrow(\mathrm{d}),(\mathrm{iii}) \rightarrow(\mathrm{b}),(\mathrm{iv}) \rightarrow(\mathrm{a})$

8%

D

$(\mathrm{i}) \rightarrow(\mathrm{b}),(\mathrm{ii}) \rightarrow(\mathrm{d}),(\mathrm{iii}) \rightarrow(\mathrm{e}),(\mathrm{iv}) \rightarrow(\mathrm{a})$

1%

Solution:

$(i) \to (b),(ii) \to (e),(iii) \to(c),(iv) \to(d) $