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The vapour pressure of 2 liquid P nd Q are 0.6 and 0.2 torr respectively.determine the mole fraction of P at which both the liquid have equal partial vapour pressure

Asked by ashutosh25807 12th March 2018, 10:10 PM
Answered by Expert
Answer:
Given colon

Pressure space of space component space straight P space equals space 0.6 space torr
Pressure space of space component space straight Q space equals space 0.2 space torr

We space have comma

straight P subscript straight P space equals space straight P subscript 1 straight x subscript 1

straight P subscript straight Q space equals space straight P subscript 2 straight x subscript 2

Bothe space the space liquids space have space equal space partial space pressure comma

therefore space straight P subscript straight P space equals straight P subscript straight Q space space

therefore space straight P subscript 1 straight x subscript 1 space equals space space straight P subscript 2 straight x subscript 2

Let space space straight x subscript 1 space equals straight X space space space and space space space straight x subscript 2 space equals left parenthesis space 1 minus straight X right parenthesis

therefore space straight P subscript 1 straight X space equals space space straight P subscript 2 left parenthesis 1 minus straight X right parenthesis

0.6 cross times open parentheses straight X close parentheses space equals space 0.2 open parentheses 1 minus straight X close parentheses

left parenthesis 0.6 straight X right parenthesis space equals space 0.2 minus 0.2 straight X

0.8 straight X equals space 0.2

straight X space equals space 0.25

Mole space fraction space of space liquid space straight P space is space 0.25
Answered by Expert 13th March 2018, 11:11 AM
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