1.

Finkelstein reaction.

Answer»

Solution :Finkelstein reaction : When ALKYL chloride of bromide is
treated with SODIUM iodide in the presence of dry acetone, alkyl iodide
is obtained. This reaction is knownn as Finkelstein reaction.
`{:(R-Cl, + NaI underset("acetone")overset("dry")(rarr),RI,+NaCl),("alkyl chloride",,"alky iodide",):}`
`{:(R-Br, + NaI underset("acetone")overset("dry")(rarr),RI,+NaBr),("alkyl bromide",,"alky iodide",):}`
In the presence of dry acetone, sodium chloride of sodium bromide
gets precipitated.
`{:(C_(2)H_(5)Br, + NaI underset("acetone")overset("dry")(rarr),C_(2)H_(5)I,+NaBr),("ethyl bromide",,"ethyl iodide",):}`
`{:(C_(2)H_(5)Br, + NaI overset("dry acetone")(rarr),C_(2)H_(5)I,+NaBr),("ethyl chloride",,"ethyl chloride",):}`


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