Constant Volume Process

For a mass of gas consisting of n= moles at a pressure

= kPa = x10^ Pa,

volume

=

and specific heat

= J/mol K,

the increase in pressure to

= kPa = x10^ Pa,

requires input heat

= J = x10^ J

All of this heat contributes to the increase in the internal energy of the gas since no work is done. The initial and final temperatures can be calculated from the pressure and volumes using the ideal gas law:

= K

= K