Consider the reversible Carnot cycle shown in Figure 5.2 with 1.25 mol of an ideal gas with
Question:
Consider the reversible Carnot cycle shown in Figure 5.2 with 1.25 mol of an ideal gas with CV= 5/2R as the working substance. The initial isothermal expansion occurs at the hot reservoir temperature of Thot= 740.K from an initial volume of 3.75 L (Va) to a volume of 12.8 L (Vb). The system then undergoes an adiabatic expansion until the temperature falls to Tcold= 310.K. The system then undergoes an isothermal compression and a subsequent adiabatic compression until the initial state described by Ta= 740.K and Va= 3.75 L is reached.
a. Calculate Vc and Vd .
b. The gas is heated to 675 K at a constant volume corresponding to the initial volume.
c. The gas undergoes a reversible isothermal expansion at 310. K until the pressure is one third of its initial value.
Figure 5.2
Transcribed Image Text:
Isothermal expansion Pa Adiabatic cold compression Adiabatic expansion hot Isothermal compression Pg- hot Pc Va Va Vo Vc Volume Pressure
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