Question

Which of the following is wrong about conjugates and conjugate pairs?

• A. $HF$ and $F^{-}$ are conjugate pairs
• B. $Na{C}_2{H}_3{O}_2$ and $C_2{H}_3{O}_2^{-}$ are conjugate pairs
• C. $C{O}_3^{2-}$ is the conjugate base of $HC{O}_3^{-}$
• D. $N{H}_4^{+}$ is the conjugate acid of $N{H}_3$
• E. A conjugate pair will differ by an $H^{+}$ ions

Answer 1

Answer: (B)

$Na{C}_2{H}_3{O}_2$ and $C_2{H}_3{O}_2^{-}$ are conjugate pairs

Answer (B) - There is a difference of $N{a}^{+}$ instead of $H^{+}$ in both pairs.

A conjugate acid is a species formed by the reception of a proton (H+) by a base—in other words, it is a base with a hydrogen ion added to it. On the other hand, a conjugate base is merely what is left after an acid has donated a proton in a chemical reaction. Hence, a conjugate base is a species formed by the removal of a proton from an acid. A conjugate pair will differ by an $H^{+}$