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CBSE Class 12-science Answered

At 80 degree C,the vapour pressure of pure liquid A is 520mm of Hg and that of pure liquid 1000mm Hg.If a mixture solution of A and B boils at 80 degree C and 1 atm pressure,Calculate the amount of A in the mixture.
Asked by Pratik | 10 Oct, 2015, 12:41: PM
answered-by-expert Expert Answer
1 space atm space equals space 760 space mm space Hg straight P subscript straight T equals space straight P subscript straight A superscript 0 straight X subscript straight A space plus space straight P subscript straight B superscript 0 straight X subscript straight B 760 equals 520 straight X subscript straight A space plus space straight P subscript straight B superscript 0 space left parenthesis 1 minus space straight X subscript straight A right parenthesis straight X subscript straight A space equals space 0.5 Hence comma space mole space percent space of space straight A space equals space 50 percent sign
Answered by Prachi Sawant | 10 Oct, 2015, 04:43: PM

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