Question

Calculate the amount of carbon dioxide that could be produced when  

1. 1 mole of carbon is burnt in air. 

2. 1 mole of carbon is burnt in 16 g of dioxygen. 

3. 2 moles of carbon are burnt in 16 g of dioxygen

Answer 1

1. The balanced equation for the combustion of carbon dioxide in dioxygen in air is

In air combustion is complete. Hence, Amount of CO₂ produced when 1 mole of carbon is burnt in air = 44 g 

2. As only 16 g dioxygen is available it is the limiting reagent. 

Hence, amount of CO₂ produced = \(\frac{44}{32}\) ×16 = 22 g 

3. Here again, dioxygen is the limiting reactant. Therefore, amount of CO₂ produced from 16 g dioxygen = \(\frac{44}{32}\) ×16 = 22g