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Question

The mole fraction of component A in vapour phase is x1 and mole fraction of component A in liquid mixture is x2 (P0A= vapour pressure of pure A, P0B= vapour pressure of pure B). Then total vapour pressure of the liquid mixture is:-

A
P0Ax2x1
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B
P0Ax1x2
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C
P0Bx1x2
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D
P0Bx2x1
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Solution

The correct option is A P0Ax2x1

Ptotalx1=P0Ax2

Ptotal=P0AxAx1

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