Heat is supplied to a diatomic gas at constant pressure. The ratio of Delta Q : Delta U : Delta W is

Heat is supplied to a diatomic gas at constant pressure. The ratio of

1.	Heat is supplied to a diatomic gas at constant pressure. The ratio of Delta Q : Delta U : Delta W is
Answer» <P>`5:3:2` `7:5:2` `2:3:5` `2:5:7` Solution :For a DIATOMIC gas, `C_(V) = (5)/(2) R, C_(P) = (7)/(2)R` At constant pressure, `DELTA Q = nC_(P)Delta T = n((7)/(2)R)Delta T` `Delta U = nC_(V) Delta T = n((5)/(2)R)Delta T` and `Delta W = Delta Q - Delta U = (7)/(2)nRDelta T - (5)/(2) nRDelta T = nRDelta T` `:. Delta Q : Delta U : Delta W = (7)/(2):(5)/(2):1 = 7:5:2`