Two liquids A and B have vapor pressures of 80.7 and 121mmHg, respectively, at 2

Question

Two liquids A and B have vapor pressures of 80.7 and 121mmHg, respectively, at 25 degrees C. What is the total vaporpressure of the ideal solution made up in the followingconcentration? 1.00 mole of A and 1.00 mole of B: _______?______mmHg *******WILL RATE******** Two liquids A and B have vapor pressures of 80.7 and 121mmHg, respectively, at 25 degrees C. What is the total vaporpressure of the ideal solution made up in the followingconcentration? 1.00 mole of A and 1.00 mole of B: _______?______mmHg *******WILL RATE********

Explanation / Answer

Ptot = yAPA +yBPB where y is the mole percent yA = (1 mol of A)/(1 mol of A + 1 mol of B) = 0.5 yB = 0.5 Ptot = yAPA +yBPB = 0.5(80.7 mmHg) + 0.5(121 mmHg)

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