A 3 : 2 molar mixture of $${N_2}$$  and $$CO$$  is present in a vessel at $$500\,bar$$  pressure. Due to hole in the vessel, the gas mixture leaks out. The composition of mixture effusing out initially is

Solution :
Molar ratio of $${N_2}$$  and $$CO$$  is 3 : 2, i.e., $$300\,bar$$  and $$200\,bar,$$  respectively
$$\eqalign{ & \frac{{{n_{{N_2}}}}}{{{n_{CO}}}} = \sqrt {\frac{{{m_{CO}}}}{{m{N_2}}}} \times \frac{{{P_{{N_2}}}}}{{{P_{CO}}}} \cr & \,\,\,\,\,\,\,\,\,\,\,\, = \frac{{300}}{{200}} \cr & \,\,\,\,\,\,\,\,\,\,\,\, = \frac{3}{2} \cr} $$