Calculate the pH of a buffer prepared by mixing 0.10 mol of sodium formate and 0.05 mol of formic acid in 1.0 L of solution. (HCO2H: Ka = 1.8 x 10-4)
A) 1.8 x 10-4
B) 3.44
C) 4.05
D) 5.31
E) none of the above
Correct Answer:
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