The variation of pressure with volume of the gas at different temperatures can be graphically represented as shown in figure. On the basis of this graph answer the following question.
(i) How will the volume of a gas change if its pressure is increased at constant temperature ?
(ii) At a constant pressure, how will the volume of a gas change if the temperature is increased from 200 K to 400 K ?

Explanation

In accordance to Boyle’s law, pressure of a gas is inversely proportional to its volume if temperature is kept constant. Thus, the volume of a gas will decrease if the pressure on the gas in increased keeping the temperature constant. e.g., at 200 K when pressure increases from p1 to p2, volume of the gas decreases, `v_(2) lt v_(1)`