If Cv = 5/2 R, Cp will be:
Correct answer: D. 7/2R
- A. 2/5R
- B. 2/7R
- C. 5/2R
- D. 7/2R
Explanation
For an ideal gas, the relationship between molar specific heats is given by Mayer's formula: Cp - Cv = R. Given Cv = 5/2 R, we can find Cp by rearranging: Cp = R + Cv = R + 5/2 R = 7/2 R.
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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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