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Answer :
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1 - True: Grignard reagents tend to act as Bronsted bases.
2 - False: Grignard reagents decompose rapidly in anhydrous ether solutions
3 - True : A Grignard reagent contains nucleophilic carbon.
4 - False: Once prepared , a Grignard reagent can be easily stored, and need not be used quickly.
5 - True : The Grignard reagent is an example of an organometallic compound.
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Final answer:
Grignard reagents do contain a nucleophilic carbon atom, should be used quickly after preparation, and are examples of organometallic compounds. Statements 1 and 2 are false.
Explanation:
The question involves Grignard reagents, which are a type of organometallic compound. Let's address each statement in turn:
- Grignard reagents tend to act as Bronsted acids. False. Grignard reagents are not Bronsted acids; instead, they can act as strong bases and nucleophiles because they have a negatively charged carbon atom.
- Grignard reagents decompose rapidly in anhydrous ether solutions. False. Anhydrous ether is actually used as a solvent for Grignard reagents because it stabilizes the reagent through solvation.
- A Grignard reagent contains nucleophilic carbon. True. The carbon attached to the metal (usually magnesium) in a Grignard reagent has a partial negative charge, making it nucleophilic.
- Once prepared, a Grignard reagent should be used quickly. True. Grignard reagents are reactive and can react with atmospheric moisture, so they should be used shortly after preparation.
- The Grignard reagent is an example of an organometallic compound. True. Grignard reagents contain carbon-metal bonds, which classifies them as organometallic compounds.
In summary, the correct statements regarding Grignard reagents are 3, 4, and 5.
