1.

4 moles of an ideal gas (C_(v)=15J) is subjected to the following process represented on P – T graph. From the given data find out whether the process is isochoric or not ? also calculate q, w, DeltaU, DeltaH,

Answer»

Solution :
PV = NRT
`4V=4Rxx400`
`V=400R"".....(1)`
`3V=4Rxx300`
`V=400R" ".....(2)`
i.e., V is CONSTANT
w = 0
`DeltaU=nC_(V)DeltaTrArr4xx15xx100=6000J`
`DeltaH=nC_(P)DeltaTrArrn(C_(V)+R)DeltaT`
`rArr4xx(15+8.3)xx100`
`rArr9320J`
`q=DeltaU=6kj`


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