Question

12 g of magnesium powder was ignited in a container having 20 g of pure oxygen. After the reaction was over, it was found that 12 g of oxygen was left unreacted. Show that it is according to law of constant proportions.

Answer 1

12g+20g--------12g+20g

As 12 gram of oxygen is unreacted and 20 gram of MgO is formed.

Hence,it is according to the law of constant proportions.

Answer 2

Explanation:

12 g of magnesium powder was ignited in a container having 20 g of pure oxygen. After the reaction was over, it was found that 12 g of oxygen was left unreacted. Show that it is according to law of constant proportions