Question

At ________ atm pressure the volume of a gas at $5$ atm will be doubled at constant temperature.

• A. $25$ atm
• B. $3$ atm
• C. $2.5$ atm
• D. $15$ atm

Answer 1

The correct option is C $2.5$ atm

$P_2{V}_2=P_1{V}_1$ at constant temperature

$⟹P_2=5atm\cdot \frac{V_1}{V_2}=5atm\cdot \frac{1}{2}=2.5atm$