A mixture of gases at `760 mm` pressure contains `65%` nitrogen `15%` oxygen and `20%` carbon dioxide by volume What is partial pressure of each in mm ? .

Explanation

Since `P' = P_(M)` x mole fraction
`:. P'_(N2) = 760 xx (65)/(100) = 494mm`
`:. P'_(O_2) = 760 xx (15)/(100) =114mm`
`:. P'_(CO_2) = 760 xx (20)/(100) =152 mm` .