1.

2 mole of an ideal mono atomic gas undergoes a reversible process for which PV^(2)=C. The gas is expanded from initial volume of 1L to a final volume of 3L starting from initial temperature of 300K. Find DeltaH for the process

Answer»

`-600R`
`-1000R`
`-3000R`
`-2K` Cal

Solution :For the given PROCESS CONDITIONS is `PV^(2)`= constant (or) `((nTR)/(V)) (v^(2))=` constant (or) `T_(1) V_(1) = T_(2) V_(2)`
So Final temperature `T_(2)= (1 xx 300)/(3) = 100K`
`Delta H = nC_(P) Delta T = 2 xx (5)/(2) R xx 200 = - 1000R`


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