When haloalkanes and aryl and vinyl halides react with magnesium metal they yield which reagent?

Question

Accepted Answer

1. Haloalkanes and aryl/vinyl halides of the type $R-X$ react with magnesium metal in dry ether to form Grignard reagents.

2. The general reaction is: $R-X + Mg \xrightarrow{	ext{dry ether}} R-MgX$, where $R-MgX$ is the Grignard reagent.

3. Hinsberg reagent is used to test amines, Tollens' and Fehling's reagents are oxidizing tests for aldehydes — none of these are formed by reaction of halides with Mg.

Hence the correct reagent formed is the Grignard reagent.

FINAL_ANSWER: b

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