One mole of an ideal monoatomic gas at temperature T and volume 1L expands to 2L against a constant external pressure of one atm under adiabatic conditions, then final temperature of gas will be:

One mole of an ideal monoatomic gas at temperature T and volume 1L exp

1.	One mole of an ideal monoatomic gas at temperature T and volume 1L expands to 2L against a constant external pressure of one atm under adiabatic conditions, then final temperature of gas will be:
Answer» <P>`(T)/(2^(2//3))` `T + (2)/(3 XX 0.0821)` T `T - (2)/(3 xx 0.0821)` Solution :Constant `P rArr` irreversibe `Delta E= - P_("EXT") Delta V` `nC_(V) Delta T = -P_("ext") (V_(2) - V_(1))` ` 1 xx (3)/(2) R xx (T_(2) - T_(1)) = -1(2-1) = -1` `T_(2) = T- (2)/(3R)`