A gas occupies 700 ml at stp. The volume occupied by the gas when its pressure is 400 mm of Hg and its temperature 15 degree centigrade is :
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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.
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