Statement 1: For equal moles of Ar and N 2 , more heat is needed at constant volume by Ar for the same temperature rise. Statement 2: N 2 molecules have rotational degrees of freedom in addition to translational ones.

C V (Ar)=3/2R and C V (N 2 )=5/2R (at moderate T). q V =nC V Δ T is larger for N 2 , so I is incorrect. II is correct. Answer (d).

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ChemistryThermodynamics - IHeat & Heat CapacityMedium2 minQB

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Statement 1: For equal moles of Ar and N₂, more heat is needed at constant volume by Ar for the same temperature rise.

Statement 2: N₂ molecules have rotational degrees of freedom in addition to translational ones.

Answer:

Solution:

C_V(Ar)=3/2R and C_V(N₂)=5/2R (at moderate T). q_V=nC_VΔ T is larger for N₂, so I is incorrect. II is correct. Answer (d).

Stream:JEESubject:ChemistryTopic:Thermodynamics - ISubtopic:Heat & Heat Capacity

⏱ 2mℹ️ Source: QB

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