How many grams of the salt CaF2 (g) are formed when 15.7 mL of 0.612 M KF reacts with an excess of aqueous calcium bicarbonate (Ca(HCO3)2) via a metathesis reaction?

Explanation:

Hello,

In this case, for the studied reaction:

Thus, the first step is to compute the reacting moles of potassium fluoride by using its volume and molarity:

Then, we apply the 2:1 molar ratio between potassium fluoride and calcium fluoride to compute the produced moles of calcium fluoride:

Finally, by using the molar mass of calcium fluoride (78.07 g/mol) we can compute its produced grams:

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