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When primary bromides are treated with a...

When primary bromides are treated with a solution of Nal in pure acetone preciptate generates within 3 minutes at `25^(@)C` whereas primary chlorides when treated with same reagent precipitate generates within 6 minutes at `50^(@)C`. Explain.

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To explain the difference in the reaction times for primary bromides and primary chlorides when treated with a solution of NaI in pure acetone, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Reaction**: The reaction in question is known as the Finkelstein reaction. It involves the exchange of halogens, where a primary alkyl halide (either bromide or chloride) is treated with sodium iodide (NaI) in acetone, leading to the formation of an iodide and a precipitate of sodium halide (NaX). 2. **Identifying the Mechanism**: The Finkelstein reaction proceeds via an SN2 mechanism. This is a bimolecular nucleophilic substitution reaction, which means that the rate of the reaction depends on both the concentration of the alkyl halide and the nucleophile (NaI in this case). ...
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