A diatomic gas γ = 1 . 4 does 400   J of work when it is expanded isobarically. The heat given to…

A diatomic gas γ=1.4 does 400 J of work when it is expanded isobarically. The heat given to the gas in the process is _____ J.

Solution

For isobaric process: W=nRΔT⇒400=nRΔT

Also: Q=nCpΔT 

 ⇒Q=n7R2ΔT  (Cp=7R2, for diatomic gas)

Q=72×400=1400 J

Asked in: JEE Main 2022 (27 Jun Shift 2)

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