solutions

Asked by rufinshafeek | 13th May, 2020, 02:54: PM

Expert Answer:

After applying Raoult's law, total vapour presssure can be written as-
 
straight P subscript Total equals space straight X subscript straight A space straight P subscript straight A superscript straight o space plus space space straight X subscript straight B space straight P subscript straight B superscript straight o
space space space space space space space space equals 0.5 cross times 400 plus space 0.5 cross times 600
space space space space space space space space equals 500 space mm space of space Hg
If space Mole space fraction space of space straight A space in space vapour equals straight Y subscript straight A
Then space straight Y subscript straight A equals straight P subscript straight A over straight P subscript Total equals fraction numerator 0.5 cross times 400 over denominator 500 end fraction equals 0.4
Mole space fraction space of space straight B space in space vapour comma
straight Y subscript straight A equals 1 minus 0.4 equals 0.6

Answered by Ravi | 14th May, 2020, 08:42: PM