1. Application of the new notation
Let us revisit the empirical definition of the constant-volume heat capacity CV Q
V=const.
1. law:
No work done

2. ? Enthalpy Q constant pressure heat capacity
expressible in terms of a state function
1. law: Q m
P=const.
P=const.
The heat Q const. pressure is equal to the change in enthalpy H

3. Difference CP-CV for the ideal gas
constant pressure heat capacity
Difference CP-CV for the ideal gas
Enthalpy of the ideal gas 1
independent of V

4. Dividing by n yields relation for molar specific heat2
U independent of V for the ideal gas
Dividing by n yields relation for molar specific heat
What happens if U=U(T,V)