Question

If a typical antacid tablet contains 2.0 g of sodium hydrogen carbonate, how many moles of carbon dioxide should one tablet yield?

How do I do this?

Answer 1

Your equation should be: NaHCO3 + H+ -----> H2O + CO2 + na

(I'm not sure of the source of H+, maybe potassium bitartrate?)

Mol CO2 = 2.0 g NaHCO3 x 1 mole CO2/ 84 g NaHCO3 = 0.024 mole CO2

Volume CO2 = 0.024 mole CO2 x 22400 mL CO2/mol Co2 = 533 mL CO2

% yield = 100% x 67.3 mL/533 mL = 12.6% (This ignores the conversion to STP)

Answer 2

Is there a certain formula that I can use to figure it out?