Vapour pressure of solution of benzene (...

Vapour pressure of solution of benzene ( `P^@ = 120` torr) and toluene ( `P^@ = 80` torr) having 2 moles of each is:

400 torr

200 torr

100 torr

50 torr

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The correct Answer is:

`P_m = X_BP_(B)^(0) xx X_(T)P_T^(0) =1/2 xx 120 + 1/2 ` torr `xx 80= 100`

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