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In this experiment I am going to look at the replacing of the halogen in the halogenoalkane by the OH group of ethanol which will form an alcohol in a substitution reaction of hydrolysis
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Assessed Practical A Comparison of halogenoalkanes Aim: In this experiment I am going to look at the replacing of the halogen in the halogenoalkane by the OH group of ethanol which will form an alcohol in a substitution reaction of hydrolysis. The nucleophilic substitution reaction - an SN2 reaction We'll talk this mechanism through using an ion as a nucleophile, because it's slightly easier. The water and ammonia mechanisms involve an extra step which you can read about on the pages describing those particular mechanisms. We'll take bromoethane as a typical primary halogenoalkane. The bromoethane has a polar bond between the carbon and the bromine. We'll look at its reaction with a general purpose nucleophilic ion which we'll call Nu-. This will have at least one lone pair of electrons. Nu- could, for example, be OH- or CN-. The lone pair on the Nu- ion will be strongly attracted to the + carbon, and will move...
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