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Aldehydes, Ketones and Carboxylic Acids

Short Answer Type

351. Explain the following:
Butanal and butanol have almost the same solubility in water, yet, their boiling points differ widely.

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352. Describe the following:
Protonation

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353. Describe the following:
Fehling’s reagent

Fehling’s reagent: Fehling regent is mixture of two solution, Fehling solution A and Fehling solution B. Fehling solution A is aqueous copper sulphate and Fehling solution B is alkaline sodium potassium tartarate(Rochelle salt).
On heating with an aldehyde with Fehling's regent, a reddish brown precipitate is obtained.