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Question
Water is heated at atomospheric pressure from 40°C to 80° using two different processes. In process I, the heating is done by a source at 80°C. In process II, the water is first heated from 40°C to 60°C by a source at 60°C, and then from 60°C to 80°C by another source at 80°C.
Identify the correct answer.
Water is heated at atomospheric pressure from 40°C to 80° using two different processes. In process I, the heating is done by a source at 80°C. In process II, the water is first heated from 40°C to 60°C by a source at 60°C, and then from 60°C to 80°C by another source at 80°C.
Identify the correct answer.
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Solution
The correct option is D Process II is closer to reversibility
Enthalpy changes of water in process I and process II are equal Process II is more closer to reversibility because heat is added at lower temperature difference as compared to process I.
Enthalpy changes of water in process I and process II are equal Process II is more closer to reversibility because heat is added at lower temperature difference as compared to process I.
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