Question 592: Thermodynamics & KTG

Question

A diatomic gas ($$\gamma$$ = 1.4) does 400J of work when it is expanded isobarically. The heat given to the gas in the process is __________ J.

Accepted Answer

W = nR$$\Delta$$T = 400 J
$$	herefore$$ $$\Delta$$Q = nC
P
$$\Delta$$T
$$ = n 	imes {7 \over 2}R 	imes \Delta T = {7 \over 2} 	imes (400) = 1400$$

Thermodynamics & KTG