HC Verma - Concepts of Physics Part 2

Book: HC Verma - Concepts of Physics Part 2

Chapter: 27. Specific Heat Capacities of Gases

Subject: Physics - Class 12th

Q. No. 12 of Exercises

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12

A mixture contains 1 mole of helium (CP = 2.5 R, CV = 1.5R) and 1 mole of hydrogen (CP = 3.5 R, CV = 2.5 R). Calculate the values of CP, CV and γ for the mixture.

Given,


CP1 = 2.5 R, CV1= 1.5R for helium


CP2 = 3.5 R, CV2= 2.5 R for hydrogen


n1=n2=1


We know dU =nCvdT


Where dU is the change in internal energy, n is the number of moles, Cv is the molar heat capacity at constant volume and dT is the change in temperature.


For the mixture,





Also,




1

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