The molar specific heat at constant volume for a monoatomic gas is:
Correct answer: B. 3R/2
- A. R
- B. 3R/2
- C. 5R/2
- D. 7R/2
Explanation
For a monoatomic gas, with three translational degrees of freedom, the molar specific heat at constant volume is Cv = (3/2)R, where R is the gas constant.
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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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