One litre of a gas weights 2 g at 300 K and 1 atm pressure. If the pressure is made 0.75 atm at which of the following temperature will one litre of the same gas weight one gram ?

Options

A. 450K
B. 600K
C. 800 K
D. 900 K

Answer

A

Explanation

`(P_(1)V_(1))/(n_(1)T_(1))=(P_(2)V_(2))/(n_(2)T_(2)):. T_(2)=(P_(2))/(P_(1))(V_(2))/(V_(1))T_(1) (m_(1))/(m_(2))=(0.75)/(1) xx (1)/(2) xx (2)/(1) xx 300K = 450 K`