Question

if volume of fixed mass of gas at constant temperature is increased by 25%,the preassure of gas will be​

Answer 1

Answer:

The problem states that the gas in consideration is ideal and has undergone isothermal expansion. (As the volume has increased by 25%.)

For isothermal processes, P1∗V1=P2∗V2

P2=P1∗V1/V2=P1∗V1/1.25∗V1 (As the volume has increased by 25%, the final volume becomes V_2 = (1 + 0.25)*V_1

P2/P1=1/1.25=0.64

P2=P1∗0.64=(1−0.36)∗P1

Thus there is a decrease of 36% in pressure for 25% increase in volume for an isothermal process.