a 196 gram sample of sodium carbonate is dissolved in nitric acid. Assuming excess acid, determine the mass and volume at STP of dry CO2 gass produced by the reaction

Answer 1

Na₂CO₃ + 2HNO₃ ===> 2NaNO₃ + CO₂ + H₂O

moles Na₂CO₃ present = 196 g x 1 mole/106 g = 1.849 moles

moles CO₂ produced = 1.849 moles Na₂CO₃ x 1 mole CO₂/mole Na₂CO₃ = 1.849 moles CO₂

mass of CO₂ produced = 1.849 moles CO₂ x 44 g/mole = 81.4 g CO₂

volume of CO₂ produced at STP = 1.849 moles CO₂ x 22.4 liters/mole = 41.4 liters CO₂