A sample of air contains Nitrogen, Oxygen and saturated with water vapour under a total pressure of 640 mm. If the vapour pressure of water at that temperature is 40 mm and the molecular ratio of N_(2): O_(2) is 3:1, the partial pressure of Nitrogen in the sample is

A sample of air contains Nitrogen, Oxygen and saturated with water vap

1.	A sample of air contains Nitrogen, Oxygen and saturated with water vapour under a total pressure of 640 mm. If the vapour pressure of water at that temperature is 40 mm and the molecular ratio of N_(2): O_(2) is 3:1, the partial pressure of Nitrogen in the sample is
Answer» <P>480 mm 600 mm 450 mm 160 mm SOLUTION :`D_(N_2) = (D_(N_2))/(N) cdot P_("Total") implies P_(N_2) = 3/4 xx 600 = 450 mm`.