Which of the following solutions is a good buffer system?
A) A solution that is 0.10 M HC2H3O2 and 0.10 M LiC2H3O2
B) A solution that is 0.10 M HBr and 0.10 M KC 2H3O2
C) A solution that is 0.10 M HI and 0.10 M NH 4+
D) A solution that is 0.10 M NaOH and 0.10 M KOH
E) None of the above are buffer systems.
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