a. what is the pKb of NO2-

Question

b. what is the pKa of the hydrazinium ion?

Answer 1

Kb for NO2^- = Kw/Ka with Ka for HNO2.
Ka for N2H5^+ = Kw/Kb with Kb for N2H4.
pKx = -log pKx

Answer 2

89.9