Question

Following the procedure that we used in class for the case of an ideal gas derive an expression for the efficiency of a Carnot engine using a van der Waals gas as the working substance. [HINT: Using the thermodynamic EOS for U the exactness relation for dU CvdT + (Tr + PdV gives | | =1 which shows that the constant volume heat capacity does not depend on V. You will need this to obtain ov OT temperature ratios on adiabats]

Answer 1

Am> du is an exat diHreniet the enat nes Cindition must be e下 A d i Cmpv A di V4 so 3 cam TC C I

a1-1l wa Vi-b