Question

At a constant temperature, the pressure of a gas is 940 mm of Hg. What will be it's pressure if the volume of the gas is decreased by 20% ?​

Answer 1

Answer:

ANSWER

Ideal gas equation states that: PV=nRT

As temperature remains constant, so PV= constant =k

As pressure decreases by 20% so P

2

=0.8P

⇒PV=(0.8P)V

2

⇒V

2

=

0.8P

PV

=

0.8

V

=1.25V

So volume of gas increases by 25%.