Question

100ml of a mixture of O2 and O3 are heated and O3 is 50% decomposed. The resultant mixture is
115ml. Find the initial volume of O3
(1) 55 ml
(2) 50 ml
(3) 65 ml
(4) 60 ml​

Answer 1

Explanation:

ANSWER

Ozone is highly soluble in turpentine. Thus, the decrease in volume of 20 ml is due to the solubility of ozone. Thus 100ml of a mixture contains 20 ml of ozone.

On heating, 20 ml of ozone decomposes to form 30 ml of oxygen. The net increase in volume will be (30−20)=10ml.

2O

3

→3O

2

So, the correct option is A