Q1:(5 MARKS): Answer True or False and give the reasons? 1- For a closed system with P-V Work only, a constant-pressure process that has q>0 must have AT>0. 2- The equation Wrev= - Pdv applies only to constant pressure processes. 2 1 3- If system A and B each consist of pure liquid water at 1 bar pressure and if TA > Te, then the internal energy of system A must be greater than that of B Q2: (5 MARKS): When mono atomic gas at initial temperature 298 K and pressure 5 atm. Expanded to 1 atm. In one of these way: 1- Reversible at constant temperature 2- At constant temperature against external pressure I atm. 3- Adiabatically and Reversibly 4- Adiabatically against pressure 1 atm. Calculate in each one : 1- Final temp. T2 2- Heat Q 3. Work W 4-The exchange enthalpy AH Lecturer name Prof.Dr. Ammar K. Al-Baaj