If 30 mL of 0.10 M NaOH is added to 40 mL of 0.20 M HC2H3O2,what is the pH of the resulting solution at 25°C? Ka for HC2H3O2 is 1.8 10-5 at 25°C.
A) 10.4
B) 4.3
C) 5.0
D) 2.7
E) 4.5
Correct Answer:
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