Ethylenediamine a base (B) can add 1 or 2 protons

CHEMISTRY · Subjective · CBSE · Chemistry · Equilibrium · Equilibrium

Problem

Ethylenediamine

\text{NH}_2\text{C}_2\text{H}_4\text{NH}_2

a base (B) can add 1 or 2 protons. The successive

pK_b

values are 4 and 7 respectively. The

p[\text{BH}_2^{2+}]

in 0.001M solution of ethylenediamine is.....