One mole of an ideal monoatomic gas is mixed with 1 mole of an ideal diatomic gas The molar specific heat of the mixture at constant volume is .

Options

A. 4 cal
B. 6 cal
C. 8 cal
D. 3 cal

Answer

A

Explanation

`C_(v)= (3)/(2) R` formonoatomic and `C_(v)= ( 5)/(2) R` for diatomic gases. Hence, for the mixture,
`C_(v) = ((3)/(2)R+(5)/(2)R)/(2)= 2R= 4 cal`