A-LevelChemistryReaction kineticsOct/Nov 2018Paper 5 Q114 Marks
The Finkelstein reaction is a nucleophilic substitution reaction in which a halogen atom in a halogenoalkane is replaced by another halogen atom. The reaction is carried out using dry propanone as a solvent. One example of the Finkelstein reaction is given. CH3CH2CH2Br + NaI ⇌ CH3CH2CH2I + NaBr (pr) = substance is dissolved in propanone The student plans to record the time it takes for the solid formed to obscure a cross on a piece of paper below the conical flask, as shown. [Figure X.X] To carry out this experiment, the following materials are available. • CH3CH2CH2Br(l) • NaI(s) • dry propanone, CH3COCH3(l) • usual laboratory apparatus
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