1.

Name two reagents which can be used to distinguish acetaldehyde from acetone?

Answer»

Solution :Acetaldehyde reduces tollens' reagent to produce shining silver mirror and PRODUCES red ppt. of `Cu_(2)O` with Fehling's solution.
`underset("Acetaldehyde")(CH_(3)CHO)+underset("Tollens' reagent")(2[Ag(NH_(3))_(2)]^(+))+3OH^(-) to underset("Acetone ion")(CH_(3)COO^(-))+ underset("Silver mirror")(2Agdarr)+4NH_(3)+2H_(2)O`
`CH_(3)CHO+underset("Fehling's reagent")ubrace(2CU^(2+)+5OH^(-)) to underset("Acetate ion")(CH_(3)COO^(-))+underset("Red ppt.")(Cu_(2)O darr) +3H_(2)O`
Acetone, on the other hand, does not give these tests.


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