In an insulated piston-cylinder assembly, there is initially 4 L of saturated liquid water at 200 kPa pressure. Then, an electric heater in the cylinder is operated, and 2400 kJ of electrical work is done on the water. The system does some expansion work to keep the pressure constant. Analyze whether such a process is possible, assuming the ambient temperature is 25 °C and the pressure is 100 kPa. The kinetic and potential energy changes are negligible.
In an insulated piston-cylinder assembly, there is initially 4 L of saturated liquid water at 200 kPa pressure. Then, an electric heater in the cylinder is operated, and 2400 kJ of electrical work is done on the water. The system does some expansion work to keep the pressure constant. Analyze whether such a process is possible, assuming the ambient temperature is 25 °C and the pressure is 100 kPa. The kinetic and potential energy changes are negligible.
Chapter3: The First Law Of Thermodynamics
Section: Chapter Questions
Problem 93CP: An insulated vessel contains 1.5 moles of argon at 2 atm. The gas initially occupies a volume of 5...
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Step 1: step-1:Determine the initial state of the water.
VIEWStep 2: step-2:Calculate the change in internal energy (ΔU).
VIEWStep 3: step-3:Calculate the work done by the system (W).
VIEWStep 4: step-4:Calculate the change in volume (ΔV).
VIEWStep 5: step-5 Substitute the values and calculate ΔU and W.
VIEWStep 6: step-6:Apply the First Law of Thermodynamics.
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