Question

The poisson`s ratio for $O_2$ is $1.4$. Which of the following are correct for $O_2$?

• A. $C_{VM}=5cal$
• B. $C_V=0.156cal$
• C. $C_P=\frac{R{\rm Y}}{{\rm Y}-1}$
• D. $C_V=\frac{R}{({\rm Y}-1)}$

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A $C_{VM}=5cal$
B $C_V=0.156cal$
C $C_P=\frac{R{\rm Y}}{{\rm Y}-1}$
D $C_V=\frac{R}{({\rm Y}-1)}$

$(a,b,c,d)$ $\frac{C_P}{C_V}=1.4={\rm Y}$
$C_P-C_V=R$
$\therefore$ $C_V=\frac{R}{{\rm Y}-1}$ and similarly $C_P-\frac{C_P}{{\rm Y}}=R$
$\therefore$ $C_V=\frac{2}{0.4}=5cal$ $\therefore$ $C_P=\frac{{\rm Y}\cdot R}{({\rm Y}-1)}$
Also, $C_V=\frac{2}{0.4\times 32}=0.156cal$