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May 23, 2015

Homework Help: Chemistry

Posted by Omar on Wednesday, October 6, 2010 at 2:17am.

I did a lab for Organic Chemistry

I did a simple distillation for an unknown and found that it boiled at 76 degrees.
I also found out that the unknown was ethanol since we knew what the 4 possibilities were and mine was closest to ethanol.

I also did a fractional distillation and only 4.0 ml were distilled off from the initial 25 ml solution.

I need to find beginning percent composition of the unknown/H2O assuming that the unknown doesn't form any azeotropes.

And also if it did form an azeotrope, calculate the beginning precent composition of the solution.

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