For the reaction, N2 O5 (g)→2NO2 (g) + 0.5 O2 (g),
Calculate the mole fraction of N2 O5 (g) decomposed at a constant volume and temperature if the initial pressure is 600 mm Hg and the pressure at any time is 960 mm Hg. Assume ideal gas behaviour.
(1) 0.4
(2) 0.2
(3) 0.1
(4) 0.5