Question

At constant pressure, the ratio of increase in volume of an ideal gas per degree rise in kelvin temperature to its original volume is (T = absolute temperature of the gas) is(a) T²(b) T(c) 1/T(d) 1/T²

Answer 1

according to ideal gas law,

PV=RT or V=R/P *T

as V is directly proportional to T

Hence V1/T1=V2/T2

V2/V1 -1 = T2/T1 -1

V2-V1/V1 =T2-T1/T1

Given T2-T1=1 K

V2-V1/V1 = 1/T1

Answer 2

Explanation:

At constant pressure

V ∝ T ⇒

V

△V

=

T

△T

.

Hence ratio of increase in volume per degree rise in kelvin temperature to its original volume

=

V

△V/△T

=

T

1