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 .

Question

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 .,

MARKS App · Accepted Answer

For isobaric process: W = n R Δ T ⇒ 400 = n R Δ T Also: Q = n C p Δ T ⇒ Q = n 7 R 2 Δ T ( C p = 7 R 2 , for diatomic gas) Q = 7 2 × 400 = 1400 J