Question

At constant temperature,a gas is at a pressure of 1200 mm Hg.At what pressure,will its volume decreses by 25 percent

Answer 1

Explanation:

P1 =1200 mm of Hg

P2 = ?

Let volume V1 at pressure 1200 is 100 l

V2 = V1 - V1×25/100

V2 = 100 - 100×25/100

V2 = 75 l

P1V1 = P2V2

1200×100 =P2×75

P2 = 1200×100/75

P2 = 1600 mm of Hg