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In the reaction between 2-chloro-2-methypropane and potassium hydroxide in ethanol, an alkene gas is produced and collected over water. It says an oily film may appear on the water surface, what is it?
060608

Corrie writes .....
 
I think this would be some of the starting material, 2-chloro-2-methylpropane, which has distilled over (B.Pt. 51 oC) with the gaseous product. It will be almost insoluble in water and has a lower density than water, so it will float.

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updated: 08 June 2008

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