Question:
A diatomic gas, having $C_{p}=\frac{7}{2} R$ and $C_{v}=\frac{5}{2} R$, is heated at constant pressure. The
ratio $\mathrm{dU}: \mathrm{dQ}: \mathrm{dW}$
Correct Option: , 2
Solution:
(2)
$C_{p}=\frac{7}{2} R$
$C_{v}=\frac{5}{2} R$
$d U=n C_{\mathrm{v}} d T$
$d Q=n C_{p} d T$
$d W=n R d T$
$d U: d Q: d W$
$C_{v}: C_{p}: R$
$\frac{5}{2} R: \frac{7}{2} R: R$
5: $7: 2$