Dr. Krueger's web page for all things CHM 112-lecture related is here.
The answer to the buffer problems from March 13-15:
1. a. pH = 9.00
b. pH = 8.93
H3O+ + NH3 - - -> H2O + NH4+
2. a. OH- + HOCl - - -> H2O + OCl-
b. pH = 7.59 (if you didn’t get this number, you probably used the wrong volume to find moles of HOCl and NaOCl, see me)
c. [HOCl] = 0.18 M, [OCl-] = 0.25 M
3. a. 7.32 x 10-4 M b. 6.28 x 10-7 M
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