JEE Main · PhysicsMedium
An ideal gas has a molar heat capacity at constant pressure $C_p = 2.5 R$. What is the atomicity of the gas?
- A.Monoatomic
- B.Diatomic
- C.Triatomic
- D.Polyatomic
Show correct answer & step-by-step solution
Correct answer: B — Diatomic
Solution
Using , we get . The ratio , which is characteristic of a diatomic gas.
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