chemistry help please!

Question

The recommended dose for tums is exactly 2 tablets. Each tablet contains 750mg of calcium carbonate. How many grams of stomach acid are neutralized by a single dose of Tums?

Answer 1

Calcium Carbonate has a molar mass of 100.1 grams per mol. you have 1500 miligrams of CaCO₃ which is 1.5 grams so you have about 0.015 mols of Calcium carbonate. The balanced chemical equation for the neutralization of HCl by CaCO₃ is: 2HCl + CaCO₃ --> CaCl₂ + H₂O + CO_2; Based off this we know that for every 1 mole of tums, 2 moles of HCl are neutralized. If we have 0.015 mols of Calcium carbonate then we have 0.030 mols of HCl. Molar mass of HCl = 36.5 grams per mol. 36.6 g/mol • 0.030 mols = 1.10 grams HCl