Question

Hydrazine is a weak base that dissociates in water as:

$N_2{H}_4+H_{2}O\rightleftharpoons N_2{H}_5^{+}+{OH}^{-}$

The equilibrium constant for dissociation at ${25}^{o}C$ is $2\times {10}^{-6}$. If initial conc. of $N_2{H}_4$ is $0.01M$ $\left[N_2{H}_5^{+}\right]$ will be:

• A. $1.31\times {10}^{-4}M$
• B. $1.41\times {10}^{-4}M$
• C. $1.14\times {10}^{-4}M$
• D. None of these

Answer 1

The correct option is B $1.41\times {10}^{-4}M$