InterviewSolution
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InterviewSolution
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When primary bromides are treated with a solution of Nal in pure acetone preciptate generates within 3 minutes at 25^(@)C whereas primarychlorides when treated with same reagent precipitate generates within 6 minutes at 50^(@)C. Explain. |
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Answer» Solution :The reaction is probably of the `S_(N)2` type involving a bimolecular attack of the iodide ion upon the carbon atom CARRYING the chloride or BROMINE. Now `BR^(-)` is better leaving group when `Cl^(-)` (as it is a weaker base). So the rate of the reaction for bromides is faster. `{:(RBr+Nal to Rl+NaBr downarrow),(RCl+Nal to Rl +NACL downarrow):}`. |
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