Question
A fixed mass of gas of volume 600 cm cube at a temperature of 27 C is cooled at constant pressure to a temperature of 0C.what is the change in volume
Answers
Damon
P V = nRT
n constant
P constant
so
P2 V2 / T2 = P1 V1 / T1
V2 = (P1/P2)(T2/T1) V1
but P is constant
V2 = (T2/T1)V1
T2 = 273
T1 = 300
so V1 less than 600
V2-V1 , the change, is negative
n constant
P constant
so
P2 V2 / T2 = P1 V1 / T1
V2 = (P1/P2)(T2/T1) V1
but P is constant
V2 = (T2/T1)V1
T2 = 273
T1 = 300
so V1 less than 600
V2-V1 , the change, is negative