Different manufacturers claim to have the best antacid. Which of the following tablets would neutralize the most acid for the money? Write a balanced chemical equation along with your answer.

a) Rolaids (550 mg CaCO3 and 110 mg Mg(OH) per tablet) - 150 tablets for $9.44

b) Tums (500 mg CaCO3 per tablet) - 150 tablets for $5.49

c) Phillips (1200 mg Mg(OH)2 per 15mL) - 769 mL for $9.99

1 answer

The equations are
CaCO3 + 2HCl ==> CaCl2 + H2O + CO2
Mg(OH)2 + 2HCl ==> MgCl2 + 2H2O

Can you go from there?