1.

If for an ideal gas, the ratio of pressure and volume is constant and is equal to 1 atm `L^(-1)` , the molar heat capacity at constant pressure would beA. `(3)/(2)R`B. `2R`C. `(5)/(2)R`D. zero

Answer» Correct Answer - C
By definition,
`H=E+PV`
`((dH)/(dT))_(P)=((dE)/(dT))_(P)+P((dV)/(dT))_(p)=C_(p),m`
For the given ideal gas, we will have `PV=RT`
or `V^(2)=RT`
or `2V((dV)/(dT))_(P)=R`
or `((dV)/(dT))_(P)=(R)/(2V)`
`E=(3RT)/(2)`
or `((dE)/(dT))_(P)=(3)/(2)R=C_(v),m`
`C_(P),m=(3)/(2)R+Pxx(R)/(2V)=((3)/(2)+(1)/(2))R=2R`


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