tylerngo Posted October 15, 2018 Share Posted October 15, 2018 I understand that the vapour will consist of both cyclohexane and toulene, and it will cool, condense, and vapourise again in the process of fractional distillation. I believe the option should be A as the mixture is supposed to go up the column slowly.However, a part of me also thinks it's option D, "nothing" because refluxing is supposed to happen. Am I getting the question right? Brumer Link to comment Share on other sites More sharing options...
FrankRizzo Posted October 21, 2018 Share Posted October 21, 2018 If you're trying to separate an azeotrope, you need a reflux column. Link to comment Share on other sites More sharing options...
Arthur Posted October 21, 2018 Share Posted October 21, 2018 Should you be asking the question?!? What happens if you don't make the separation. Is there a way to break this azeotrope. Link to comment Share on other sites More sharing options...
FrankRizzo Posted October 21, 2018 Share Posted October 21, 2018 If this is a homework question, please post the entire question and the answer options. As the vapor travels up the column, you will get various mixtures at each theoretical plate. If your column and reflux ratio is designed correctly, you will be able to separate off the cyclohexane first. Link to comment Share on other sites More sharing options...
Mumbles Posted October 24, 2018 Share Posted October 24, 2018 Cyclohexane and toluene might form an azeotrope. It does with benzene. With enough theoretical plates, you'll eventually approach that azeotrope limit. You need to do some different things to break the azeotrope. If there is not one, it will eventually separate into pure cyclohexane and toluene theoretically given enough theoretical plates Link to comment Share on other sites More sharing options...
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