Equal volumes of two monoatomic gases,`A,B,`at the same temperature and pressure are mixed.The ratio of specific heats`(C_(p)//C_(v))`of the mixture will be

Options

A. `0.83`
B. `1.50`
C. `3.3`
D. `1.67`

Answer

D

Explanation

`c_(P)` for a mixture of monoatomic gas having equal volume `=5//2 R` , `c_(P)=3//2R`
`c_(P)//c_(v)=(5//2R)/(3//2)=5//3=1.67`