Find the lowest temperature of vaporization and the highest temperature when there is liquid left over.
A liquid mixture of 20 mol% benzene, 50 mol% toluene and 30 mol% xylene is to be partially vaporized at 1 atm pressure. You are asked to calculate the range of temperatures which could be used for this process.
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Antoine constants: pressure [=] mmHg Temperature [=] C
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at 1 atm (degreesC)
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A
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B
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C
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Benzene
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6.89
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1203
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220
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80.1
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Toluene
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6.96
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1347
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220
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110.6
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Xylene
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7.00
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1467
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214
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140
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1. What is the lowest temperature at which vaporization could occur? ___________ degrees C.
(provide answer to within +/- 5 °C)
2. What is the highest temperature that could be used and liquid still be present? __________ degrees C.
(provide answer to within +/- 5 °C)