Under a pressure of 1.2*atm a gas occupies an 8*mL volume in a piston. What pressure develops if the volume is increased to 12*mL?

1 Answer
Jan 16, 2017

P_2=0.8*atm

Explanation:

Boyle's Law holds that P_1V_1=P_2V_2 at constant temperature.

And thus P_2=(P_1V_1)/V_2=(1.2*atmxx8*mL)/(12*mL)=0.8*atm.

This decrease in pressure is reasonable, given that we have INCREASED the volume.