Questions
Four moles of hydrogen, two moles of helium and one mole of water vapour form an ideal gas mixture. What is the molar specific heat at constant pressure of mixture?
a
167 R
b
7R16
c
R
d
237R
detailed solution
Correct option is D
Cv for hydrogen = 5R2, Cv for helium = 3R2Cv for water vapour = 6R2∴ [Cv]mix = 4×5R2+23R2+1×3R4+2+1 = 16R7∴ Cp+Cv+R = 16R7+R = 23R7Talk to our academic expert!
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