LAB Dimerization of an Alkene Dimculty Level Key Words Refllux Simple Distillati

Question

LAB Dimerization of an Alkene Dimculty Level Key Words Refllux Simple Distillation Background Under certain circumstances dimerization is a side reaction of acid-catalyzed dehydration of alcohols. In this version of the technique, t-butyl alcohol is dehydrated to isobutylene (2-methylpropene), which then under- goes dimerization to a mixture of trimethylpentenes. Hydrogenation of the product mixture would yield high octane gasoline. THE SYNTHESIS OF ISOOCTENE CH, a CHs CH CH CH3 CH -CH3 CH, CH3 Minor Major 2-Methyl-2-propanol Sulfuric acid (concentrated) Calcium chloride (anhydrous) Lab VII F Dimerization of an Alkene

Explanation / Answer

Adding water to acid will make the acid dissociate into ions which is lower energy state hence releasing energy which will released in form of heat.

this is the reason why heat is released when water is added to acid.

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mostly all organic layer are less dense than water so it will be on the top and water (aqueous layer) will be on the bottom .

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this washing with water will remove the excess acid present if any in the hydrocarbon layer

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