Question

on prior student antacid question, words should say "mass effectiveness ".... thx

Answer 1

Antacids are the bases that react stoichiometrically with acid. The number of moles of acid that can be neutralized by a single tablet of a commerial antacid will be determined by back titration. To do the experiment , an antacid tablet will be dissolved in a known excess amount of acid. The resulting solution will be acidic because the tablet did not provide enough moles of base to completely neutralize the aid. The solution will be titrated with base of known concentration to determine the amount of acid not neutralized by the tablet to find the number of moles of acid neutralized by the tablet, the number of moles of acid nuetralized in the titration is subtracted from the moles of acid in the initial solution.