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0.5 mole each of two ideal gasesA (C(v,m...

0.5 mole each of two ideal gases`A (C_(v,m)=(5)/(2)R)` and `B (C_(v,m)=3R)` are taken in a container and expanded reversibly and adiabatically, during this process temperature of gaseous mixture decreased from 350 K to 250 K. Find `DeltaH` (in cal/mol) for the process :

A

`-100R`

B

`-137.5R`

C

`-375R`

D

None of these

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