What is the total vapor pressure at 25 C of a solution that is 25 A and 75 B by

What is the total vapor pressure at 25 c of a

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What is the total vapor pressure at 25 C of a solution that is 25% A and 75% B by weight? 1. 76 torr 2. 225 torr 3. 115 torr 4. 124 torr 5. 203 torr 6. 108 torr 7. 135 torr correct 8. 335 torr 9. 191 torr Explanation: For A, P 0 = 255 torr MW = 50 g / mol For B, P 0 = 90 torr MW = 75 g / mol The mole fractions are 1 3 for A and 2 3 for B. 1 3 · (225) + 2 3 · (90) = 135 torr
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