The amount of each reactant required to produce 750 ml of carbon dioxide

Mole Concept (10)

Calculate:

(i) The amount of each reactant required to produce 750 ml of carbon dioxide, when two volumes of carbon monoxide combine with one volume of oxygen to produce two volumes of carbon dioxide.

2CO + O₂ → 2CO₂

(ii) State the law associated in above question.

Answer

(i)

2 mL of carbon monoxide produces 2 ml of carbon dioxide

750 mL of carbon dioxide produces = 750x2/2 = 750 mL

1 mL of oxygen produces 2ml of carbon dioxide

750 mL of carbon dioxide produces = 750 x 1/2 = 375 mL

Amount of carbon monoxide required is 750 mL and oxygen is 375 mL

(ii) When gases react, they do so in volumes which bears a simple whole number ratio to one another and to the volumes of the products, if gaseous, provided the temperature and pressure of the reacting gases and their products remain constant.

• Exam Year: 2020