
(a)
Interpretation: The value of heat, work done, change in internal energy, change in entropy and change in enthalpy needs to be determined if a gas undergoes a reversible adiabatic expansion and final pressure is 1/3rd of the initial.
Concept Introduction:
The change in enthalpy for a process can be calculated as follows:
Here,
Also, the change in internal energy as follows:
Here,
Also,
Here, q is heat and w is work done.
The ideal gas equation is represented as follows:
Here, P is pressure, V is volume, n is number of moles, R is Universal gas constant and T is temperature.
(b)
Interpretation: The value of heat, work done, change in internal energy, change in entropy and change in enthalpy needs to be determined if a gas undergoes an adiabatic expansion at constant external pressure and final pressure is 1/3rd of the initial volume.
Concept Introduction:
The change in enthalpy for a process can be calculated as follows:
Here,
Also, the change in internal energy as follows:
Here,
Also,
Here, q is heat and w is work done.
The ideal gas equation is represented as follows:
Here, P is pressure, V is volume, n is number of moles, R is Universal gas constant and T is temperature.
(c)
Interpretation: The value of heat, work done, change in internal energy, change in entropy and change in enthalpy needs to be determined if a gas undergoes an expansion at zero external pressure and final pressure is 1/3rd of the initial volume.
Concept Introduction:
The change in enthalpy for a process can be calculated as follows:
Here,
Also, the change in internal energy as follows:
Here,
Also,
Here, q is heat and w is work done.
The ideal gas equation is represented as follows:
Here, P is pressure, V is volume, n is number of moles, R is Universal gas constant and T is temperature.

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Chapter 5 Solutions
Thermodynamics, Statistical Thermodynamics, & Kinetics
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