Answer to Question #269575 in Physical Chemistry for Leslie

Question

An antacid tablet contains sodium hydrogen carbonate and inert ingredients. A 0.50g sample of the powdered tablet was mixed with 50cm3 of 0.19MHCl. The mixture was allowed to stand until it reacted

NaHCO3(s) + HCl(aq)  NaCl(aq) + CO2(g) + H2O(l)

The excess hydrochloric acid was reacted with 47.1cm3 of 0.128molddm-3 NaOH. What is the

percentage of NaHCO3 in the antacid?

Answer 1

Percentage of NaHCO3 in the antacid=58.47%