Question

A sample of gas was collected when the pressure is 1.2 atmospheres and has a volume of 2.5L
What volume will it occupy at a pressure of 1.5 atmospheres?​

Answer 1

by boyles law
P1V1=P2V2
1.2X2.5=1.5XV2
V2=2L

Answer 2

Answer:

The required volume is 2 L.

Explanation:

Given :

A sample of gas was collected when the pressure is 1.2 atmospheres and has a volume of 2.5 L.

To find :

the volume occupied by it at a pressure of 1.5 atm

Solution :

Let P1 = 1.2 atm and P2 = 1.5 atm

V1 = 2.5 L and V2 = ?

By Boyle's law,

The pressure of a gas is inversely proportional to the volume of the gas at constant temperature.

PV = constant

P1V1 = P2V2

1.2 × 2.5 = 1.5 × V2

3 = 1.5 × V2

V2 = 3/1.5

V2 = 30/15

V2 = 2 L

Therefore the required volume is 2 L.