Steam distillation is used to purify a compound which is steam volatile and insoluble in water. The impurities should not be steam volatile. It is based on the principle that liquid will boil when partial sure. `p=p_(1)+p_(2)`. It reduces the boiling point of liquid.
`("Weight of water distilled")/("Wt of substance distilled")=("M.wt of water"xx"V.P. of steam")/("M.Wt of substance"xx "V.P. of aniline")`
Calculate weight of aniline distilled if weight of water distilled is 100g when `P_("organic compound")=100mm` and `P_(H_(2)O)=200mm`

Options

A. 250 g
B. 258 g
C. 100 g
D. 25.8 g

Answer

B

Explanation

`(omega_(1))/(omega_(2))=(P_(1).18)/(P_(2).93)` suffix 1 for `H_(2)O` , suffix 2 for aniline, MW of aniline = 93.
`(100)/(omega_(2))=(200xx18)/(100xx93)rArr omega_(2)=258.33`