Homework Answers
clearly it is given arginine formula H3A2+
H3A2+ + H2O < ----------------------> H2A+ + H3O+ , Ka1
H2A+ + H2O <-----------------------> HA + H3O+ , Ka2
HA + H2O <--------------------> A- + H3O+ , Ka3
for Kb
Kb1 = Kw / Ka3
Kb2 = Kw / Ka2
Kb3 = Kw / Ka1
so for Kb1
A- + H2O -------------------> HA + OH-
now coming to our question and answers
A) for Kb1
A- + H2O <-------------------> HA + OH-
B) for Ka2
H2A+ + H2O <-----------------------> HA + H3O+
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