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The temperature where the first vapor is formed, when heating a liquid consisting of two or more components(a) Dew point(b) Bubble point(c) Final point(d) Aniline pointI have been asked this question in an online interview.Origin of the question is Bubble Point Method in section Rigorous Distillation Calculations of Distillation Design

Answer»

The correct answer is (a) Dew point

For explanation I would say: The temperature where the FIRST VAPOR is formed when heating a liquid consisting of TWO or more components BUBBLE point, while when the first drop of aniline separates out is called the aniline point.

^Nc∑Yi ∑Kixi.



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