Joule Thomson effect is based upon __________ ?
Correct answer: B. Sudden expansion of gases
- A. Sudden compression of gases
- B. Sudden expansion of gases
- C. Cooling of gases
- D. Heating of gases
Explanation
The Joule-Thomson effect occurs when a real gas undergoes throttling, usually through a porous plug or narrow valve, causing a pressure drop and often expansion without external work. The likely mistake is choosing cooling, because cooling can result from the effect but is not its basic process.
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About Molar Specific Heat of a Gas
Molar specific heat is the heat required to raise the temperature of one mole of a gas by one kelvin, expressed through Q = nCΔT. Questions compare the constant volume value Cv with the constant pressure value Cp, apply the ideal gas relation Cp − Cv = R, and identify how the thermodynamic process affects heat capacity.
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