1. You weigh out an antacid tablet and determine the mass to be 1.1990 g. After taking a
0.2455 g sample of the antacid tablet, you dissolve it in 25.00 mL of a 0.1006 M solution of hydrochloric
acid in a 250.0 mL Erlenmeyer flask. After heating the solution to get rid of carbon dioxide, you titrate the
leftover hydrochloric acid in the solution in the Erlenmeyer flask with a 0.09913 M solution of sodium
hydroxide and determine that it takes 14.71 mL of the sodium hydroxide solution to react with the leftover
hydrochloric acid in solution. Determine the milligrams of calcium carbonate in the sample of antacid tablet
and then determine the milligrams of calcium carbonate in the entire antacid tablet.
2. What indicator will be used for this titration reaction? What color change will occur?