Question

Two moles of an ideal gas are undergone a cyclic process 1-2-3-1. If net heat exchange in the process is 300J, the work done by the gas in the process 2-3 is

A. (a) `-500J`
B. (b) `-5000J`
C. (c) `-3000J`
D. (d) None of these

Answer 1

Correct Answer - D
1-2 `TpropV`
`:.` p=constant
`Q_(n et)=W_(n et)=W_12+W_23+W_31`
`:.` `W_23=Q_(n et)-W_12` (as `W_31=0`)
`=-300-nRDeltaT`
`=-300-2xx8.31xx300`
`-5286J`