Question

consider the chemical reaction between carbon and oxygen to produce carbon dioxide. what mass of carbon dioxide will be produced if 32.24 grams of carbon reacts completely with 54.75 grams of oxygen?

Answer 1

The reaction that takes place is

C + O₂ => CO₂

1 mole of Carbon reacts completely with 1 mole of Oxygen and produce 1 mole of CO₂

given mass of carbon 32.24 grams

moles of carbon = 32.24 / 12 (molecular mass of Carbon) = 2.69

given mass of oxygen 54.75 grams

moles of O₂ = 54.75 / 32 (molecular mass of O₂) = 1.711

So limiting reagent in this reaction is O₂

so moles of CO₂ produced is equal to moles of O_2, as 1 mole of O₂ produce 1 mole of CO₂

so moles of CO₂ = 1.711

mass = 1.711 * 44 (molecular mass of CO₂) = 75.28 grams

mass of carbon dioxide produced is 75.28 grams