Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoDifferent processesMedium2 minPYQ_2020
PhysicsMediumnumerical

Initially a gas of diatomic molecules is contained in a cylinder of volumeV1at a pressureP1and temperature250 K. Assuming that25%of the molecules get dissociated causing a change in number of moles. The pressure of the resulting gas at temperature2000 K,when contained in a volume2V1is given byP2. The ratioP2/P1is -

Answer:
5.00
Solution:

  P1=P1
v1=v1
T1=250
n1=n0
n2=0.75n0+2×0.25n0=1.25no
v2=2V1
T2=2000
P1V1=n1RT1
P2V2=n2RT2
P1V1=n0R×250
P22V1=.25n0R(2000)
equation (1) /(2)
P12P2=2501.25×2000
P1P2=15
P2P1=5

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Different processes
2mℹ️ Source: PYQ_2020

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