A gas originally at `1.10atm` and `298K` underwent a reversible adiabatic expansion to `1.00atm` and `287K`. What is the molar heat capacity of the gas?

Answer

5

Explanation

For reversible adiabatic process
`((T_(2))/(T_(1)))^(C_(p)//R)=(P_(2))/(P_(1))`
`implies (287/298)^(C_(p)//2)=1.0/1.1`
`(C_(p))/2xx0.01633=-0.04139`
`implies C_(p)=5 "cal "mol^(-1)`