Solve this:
Q.11 (S) 0.5 mole each of two ideal gases A $\left(C_{v, m}=\frac{5}{2}R\right)$ and B ($C_{v, m}$ = 3 R) are taken in a container and expanded reversibly and adiabatically, during this process temperature of gaseous mixture decreased from 350 K and 250 K. Find $∆$H (in cal/mol) for the process :
(a) - 100 R
(b) - 137.5 R
(c) - 375 R
(d) None of these