One Brand of Extra-Strength Antacid Tablets Contains 750 Mg of Calcium

Multiple Choice

One brand of extra-strength antacid tablets contains 750 mg of calcium carbonate (100 g/mol) in each tablet. Stomach acid is essentially a hydrochloric acid solution. Is so much calcium carbonate really needed to neutralize stomach acid? Calculate the volume of stomach acid with a pH of 1.0 that one of these tablets could neutralize, and compare that value with the normal volume of stomach fluid, which usually is about 100 mL. One tablet can neutralize ________ mL of stomach acid at a pH of 1.0.

A) 75
B) 150
C) 250
D) 15
E) 7.5