1)
pKb = 9.13
Kb = 10^-pKb
= 10^-9.13
= 7.41 x 10^-10
Kb = 7.41 x 10^-10
answer : b) 7.41 x 10^-10
2)
pKb = 3.25
Kb = 10^-pKb
Kb = 10^-3.25
Kb = 5.62 x 10^-4
for :
Ka x Kb = 10^-14
Ka x 5.62 x 10^-4 = 10^-14
Ka = 1.77 x 10^-11
answer : A) 1.77 x 10^-11
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