【Daily Question】Chemical Engineering Principles 252: Relative Volatility (December 3)
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This post was last edited by Zaihui Kangqiao on 2015-12-24 at 13:48. The Chemical Engineering Theory section is launching a \"One Question per Day\" activity starting today, aimed at helping everyone reinforce their basic knowledge in chemical engineering. Subsequent series such as \"Chemical Engineering Principles,\" \"Mass Transfer and Separation,\" \"Chemical Engineering Thermodynamics,\" and \"Chemical Engineering Processes\" will also be introduced. We hope for your active support! Answers to the questions in the \"One Question per Day\" activity can be viewed directly, and the thread will be closed after 1 day! ! Participation earns 3 wealth points, with an additional 3 wealth points for correct answers. Fill-in-the-blank question: The expression for relative volatility is а=______________. In the distillation of a two-component solution, when а=1, can ___________ be separated? аA/аB, not possible
a=Ka/Kb; not possible
In the formula, yA represents the molar fraction of the volatile components in the gas phase； yB — mole fraction of the poorly volatile components in the gas phase ； xA — mole fraction of the volatile components in the liquid phase ； xB — the molar fraction of the poorly volatile components in the liquid phase. It cannot be separated when a=1.
Sorry, the formula was omitted. α = (yA/yB) / (xA/xB), where yA is the molar fraction of the volatile component in the gas phase； yB — mole fraction of the poorly volatile components in the gas phase ； xA — mole fraction of the volatile components in the liquid phase ； xB — the molar fraction of the poorly volatile components in the liquid phase. It cannot be separated when a=1.
The expression for relative volatility is а=(yA/yB)/(xA/xB). For the distillation of a two-component solution, when а=1, it is possible to separate _____ no ______.
a = (yA/yB) / (xA/xB). – Not possible. －－－－－
α=αA/αB ； Can’t
The expression for relative volatility is а = Va/Vb. In the distillation of binary solutions, when а=1, it is not possible to separate them.
This post was last edited by wfs_bipt2014 on 2015-12-3 at 11:06. Fill-in-the-blank question: The expression for relative volatility is а=______аA/аB________. In the distillation of a two-component solution, when а=1, can it be separated? ______ Yes, _____ No.