Question

Which of the following is the strongest base?

• A. $C{H}_{3}CO{O}^{-}$
• B. $C{l}^{-}$
• C. $O{H}^{-}$
• D. $C{H}_3{O}^{-}$

Answer 1

Answer: (C)

To check the basicity of an ion, the conjugate acid must be weak. The conjugate acids are given below: $H_{2}O,C{H}_{3}OH,C{H}_{3}COOH$ and $HCl$.

We know that methanol is a stronger acid than water. Weaker the acid, stronger is the conjugate base, by that logic, $O{H}^{-}$ is the strongest base among the given options.