The heat capacity at constant pressure of a gas varies with temperature as Cp = 9+10T J/(mole-K). What will be the enthalpy of formation (in kJ/mol) when temperature rises to 350 K from 300 K? Given that the enthalpy of formation at 300K is 45 kJ/mol.
208
20
220
45
According to Kirchoff’s equation,
We have given,
Putting all these value in the equation we get,