Question

Two mole of argon are mixed with one mole of hydrogen, then C_p/C_v for the mixture is nearly

• A. 1.2
• B. 1.3
• C. 1.4
• D. 1.5

Answer 1

Answer: (C)

1.4

Answer 2

Average degree of freedom

f_av = $\frac{2 \times 3 + 1 \times 5}{2 + 3} = \frac{11}{5}$

ν_mix = 1 + $\frac{1}{f_{av}}$ = 1 + $\frac{5}{11}$ = $\frac{16}{11}$ = 1.4

Hence, C is correct Answer.