Aldehydes are reduced to
Correct answer: D. H-
- A. proton
- B. H+
- C. both a & b
- D. H-
Explanation
The tetrahydroborate ion (BH₄⁻) acts as a strong nucleophilic hydride donor, readily releasing its negatively charged hydrogen atom (H⁻) to other molecules. This makes it a valuable reagent in organic synthesis for various reduction reactions.Therefore, considering its characteristic property of releasing a negatively charged hydrogen atom, H⁻ emerges as the accurate answer, making (d) the correct choice.Example Reaction:BH₄⁻ + CH₃CHO → CH₃CH₂OH + BH₃O₂⁻ (Reduction of aldehyde to alcohol)
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About Aldehydes and Ketones
Aldehydes and ketones contain the polar carbonyl group, but aldehydes are generally more readily oxidised and more reactive than ketones. Coverage includes preparation by oxidation or reduction routes, nucleophilic addition of reagents such as hydrogen cyanide and bisulfite, and tests that distinguish aldehydes from ketones.
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