Calculate the mass of salt that will result from the interaction of calcium carbonate with 120 grams of hydrochloric acid.

The reaction of dissolving limestone in hydrochloric acid is described by the following chemical reaction equation:

CaCO3 + 2HCl = CaCl2 + CO2 + H2O;

When 1 mol of limestone is dissolved in acid, 1 mol of gaseous carbon dioxide is synthesized. This consumes 2 mol of hydrochloric acid.

Let’s calculate the available chemical amount of calcium carbonate substance.

M CaCO3 = 40 + 12 + 16 x 3 = 100 grams / mol;

N CaCO3 = 120/100 = 1.2 mol;

Thus, dissolving 1.2 mol of limestone synthesizes 1.2 mol of carbon dioxide and 1.2 mol of calcium chloride.

Let’s calculate the weight of calcium chloride.

M CaCl2 = 12 + 35.5 x 2 = 111 grams / mol;

m CaCl2 = 1.2 x 111 = 133.2 grams;