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. `-100 R`B. `-137.5 R`C. `-375 R`D. None of these

0.5 mole each of two ideal gases`A (C_(v,m)=(5)/(2)R)` and `B (C_(v,m)

1.	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. `-100 R`B. `-137.5 R`C. `-375 R`D. None of these
Answer» Correct Answer - C `DeltaH=(n_(1)C_(p,m_(1))+n_(2)C_(p,m_(2)))DeltaT` `=(0.5 xx(7)/(2)R+0.5xx4R)(-100)` `=-375 R`

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