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Q13. Carbon dioxide, initially at a pressure of 5 bar and a temperature of 300°C, is heated at constant volume in a cylinder to a temperature of 600°C. It then expands reversibly according to the law pV^1.35 = constant until the pressure has returned to its original value.

(a) Sketch the processes on p-V and T-s diagrams.

(b) Calculate EACH of the following:

(i) The final temperature

(ii) The magnitude and direction of the total heat transfer per kg

(iii) The total change in specific entropy.

Note: For CO₂, R = 0.189 kJ/kg K and  g = 1.22