An ideal gas expands according to the law `PV^(3//2)`=constant We conclude that

Options

A. the adiabatic exponent of the gas k=1.5
B. the molar heat capacity `C=C_(V)-2R`
C. temperature increases during the process
D. such a gas is not feasible.

Answer

B

Explanation

`C=C_(V)+(PdV)/(ndT)`
`PV^(3//2)=k," "PV=nRT`
Find relation in V and T
`(dV)/(dT)=-(2V)/(T)`
`thereforeC=C_(V)-2R`