Question

The conjugate base of OH- ion is

• A. $H_{2}O$
• B. ${O_{2}}^{2 -}$
• C. $H_{3}O^{+}$
• D. $O^{-}$

Answer 1

Answer: (B)

${O_{2}}^{2 -}$

Answer 2

OH^{-} & \overset{\quad - H^{+}\quad}{\rightarrow} & {O^{2}}^{-} \\ acid & & bases \end{matrix}$$