Question

v1 = 400cm3 at 0degree celsius 780 mmhg what volume in liters will occupy 80 degree celsius and 780 mmhg, what is will its new volume be?

Answer 1

Answer:

Given that at 100℃ and 760 mm Hg pressure, a gas occupies a volume of 100cm3.

P1=760mm Hg

T1=0℃=273K

V1=100cm3

The kelvin temperature of the gas is increased by one-fifth while the pressure is increased one and half-times.

P2=760+21×760=1140 mm Hg

T2=273+51×273=327.6K

V2=?

Using combined gas law, we have

T1P1V1=T2P2V2

⇒273760×100=327.61140×V2

⇒V2=80cm3

Hence the final volume of the gas will be 80cc.

Explanation: