Homework Answers
(a) pH at point B = 4
pOH = 14-pH = 14-4 = 10
-------------------------------------------------
(b) at point C pH = 5
[H+] = 10^-5 M, [OH-] = 10^-14/[H+] = 10^-9 M
-------------------------------
(c)
pH = 8 , pOH = 6
------------------------
(d)
pH =9
----------------------
(e) pKb1 = pKw - pKa1 = 14- 2 = 12
pKb2 = 14-5 = 9
pKb3 = 14-9 = 5
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