1
KCET 2021
MCQ (Single Correct Answer)
+1
-0

$$K_a$$ values for acids $$\mathrm{H}_2 \mathrm{SO}_3, \mathrm{HNO}_2, \mathrm{CH}_3 \mathrm{COOH}$$ and $$\mathrm{HCN}$$ are respectively $$13 \times 10^{-2}, 4 \times 10^{-4}, 1.8 \times 10^{-5}$$ and $$4 \times 10^{-10}$$, which of the above acids produces stronger conjugate base in aqueous solution?

A
$$\mathrm{H}_2 \mathrm{SO}_3$$
B
$$\mathrm{HNO}_2$$
C
$$\mathrm{CH}_3 \mathrm{COOH}$$
D
$$\mathrm{HCN}$$
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