Question

Moist nitrogen at a pressure of 700 mm of Hg and temperature 300 K is found to occupy

a volume of 100 cm3 . Determine the volume of dry volume dry nitrogen gas at S.T.P.​

Answer 1

Answer:

V

1

=700 ml

P

1

=1 atm=760 mm Hg

T

1

=298 K V

2

=?

P

2

=400 mm Hg

T

1

=288 K

Here number of moles is constant.

∴

T

1

P

1

V

1

=

T

2

P

2

V

2

V

2

=

T

1

×P

2

P

1

×V

1

×T

2

=

298×400

760×700×288

=1285.37 ml

∴ Volume occupied by gas is 1285.37 ml.