How Cv = f/2R?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
For an ideal gas, Cv = (f/2)R, where:
- f = degrees of freedom (ways molecules can store energy)
- R = universal gas constant (8.314 J/mol·K)
For example:
- Monatomic gases (f=3): Cv = 3R/2
- Diatomic gases (f=5): Cv = 5R/2
This relates molecular motion to heat capacity.
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