Question

What is the pH of a solution made by dissolving 5.06 grams of calcium fluoride in enough water to make 4.0×102 mL of solution? The Ka for HF is 6.8x10–4.

Hi, I'm posting this question because somewhere I went wrong and got a pH of 8.14 which is not correct. The hint told me to look at my F- concentration.

Thank you !

Answer 1