1.

Four moles of hydrogen, 2 moles of helium and 1 mole of water vapour form an ideal gas mixture. What is the molr specific heat at constant pressure of mixture?

Answer»

`(16)/(7)R`
`(7R)/(16)`
`R`
`(23)/(7)R`

Solution :`C_(V)` for hydrogen = `5R//2`,
`C_(V)` for HELIUM = `3R//2,C_(v)` for water vapour = `6R//2=3R`
`therefore (C_(V))_("mix")=(4XX(5R)/(2)+2XX(3R)/(2)+1xx3R)/(4+2+1)=(16R)/(7)`
`therefore C_(P)=C_(V)+R=(16R)/(7)+R=(23R)/(7)`


Discussion

No Comment Found

Related InterviewSolutions