Question

Pls fetch a hand in this Q:

8 g of carbon burns in 21.2 g of oxygen gas to get 29.2 g of CO2. If the same C were burnt in 50 g of oxygen, what is the mass of CO2 produced?

Answer 1

This is governed by the law of definite proportion. Carbon and oxygen combine in 3:8 ratio. So 11 g of carbon dioxide is formed.

Hence, in the latter case too, only 8 g of O

2

will be reacted with 3g of carbon (because carbon is the limiting reagent here ) to form 11g of CO

2

and 42 g of oxygen will remain unreacted.