Problem: The pKa of HCN is 9.31 and that of HF is 3.46. Which is the stronger Brønsted base, CN- or F-? Select the single best answer.a. CN-, because HCN is a stronger acid than HF.b. CN-, because HCN is a weaker acid than HF.c. F-, because HCN is a stronger acid than HF.d. F-, because HCN is a weaker acid than HF.

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The pKa of HCN is 9.31 and that of HF is 3.46. Which is the stronger Brønsted base, CN- or F-? Select the single best answer.

a. CN-, because HCN is a stronger acid than HF.

b. CN-, because HCN is a weaker acid than HF.

c. F-, because HCN is a stronger acid than HF.

d. F-, because HCN is a weaker acid than HF.