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A liquid with high boiling point decomposes on simple distillation but it can be steam distilled for its purification. Explain how is it possible?

Answer» <html><body><p></p>Solution :In vapour phase distillation vapour of organic compound and water is distilled out water vapour is passed in <a href="https://interviewquestions.tuteehub.com/tag/liquid-1075124" style="font-weight:bold;" target="_blank" title="Click to know more about LIQUID">LIQUID</a> which should be purified. So, vapour of liquid and vapour of water rises up and pass in condenser. So, liquid and water remain non-misible and form separate layer. When the total vapour <a href="https://interviewquestions.tuteehub.com/tag/pressure-1164240" style="font-weight:bold;" target="_blank" title="Click to know more about PRESSURE">PRESSURE</a> of liquid and water becomes equal to <a href="https://interviewquestions.tuteehub.com/tag/atmospheric-887165" style="font-weight:bold;" target="_blank" title="Click to know more about ATMOSPHERIC">ATMOSPHERIC</a> pressure than distillation take place. <br/> so, `(p_(1) + p_(2))= p " " p_(1) lt p and p_(2) lt p` <br/> `:. p_(1) = (p- p_(2))` <br/> Vapour pressure of organic liquid (A) is less than total pressure (p). <br/> so, vapour distillation take place at lower temperature than <a href="https://interviewquestions.tuteehub.com/tag/boiling-17187" style="font-weight:bold;" target="_blank" title="Click to know more about BOILING">BOILING</a> <a href="https://interviewquestions.tuteehub.com/tag/point-1157106" style="font-weight:bold;" target="_blank" title="Click to know more about POINT">POINT</a></body></html>


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