The percentage of sodium hydrogen carbonate, NaHCO3, in a powder for stomach upsets is found by titrating with 0.275 M hydrochloric acid. If 16.0 mL of hydrochloric acid is required to react with 0.500 g of the sample, what is the percentage of sodium hydrogen carbonate in the sample? The balanced equation for the reaction that takes place is NaHCO3(s) + H+(aq) → Na+(aq) + CO2(g) + H2O(l)

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".