Application of the new notation

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Presentation transcript:

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

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

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

Dividing by n yields relation for molar specific heat 2 U independent of V for the ideal gas Dividing by n yields relation for molar specific heat What happens if U=U(T,V)