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How will youdistinguish between benzalde...

How will youdistinguish between benzaldehyde andacetaldehyde?

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Acetaldehyde and Benzaldehyde. Acetaldehyde can distinguished from benzaldehyde by Fehling solution test. Only acetaldehyde reduces Fehling solution to cuprous oxide. When acetaldehyde is warmed with Fehling solution a red coloured precipitate or cuprous oxide `(Cu_(2)O)` is formed.
`underset("Acetaldehyde")(CH_(3)CHO) + underset("Fehling solution")([2Cu^(2+) + 5OH^(-)]) rarr CH_(3)CO bar(O) + 3H_(2)O + underset("Red ppt.")(Cu_(2)O)`
Benzaldehyde will not give this test.
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BETTER CHOICE PUBLICATION-ORGANIC COMPOUND WITH FUNCTIONAL GROUP CONTANING OXYGEN-II-Question Bank (12. 3 Physical Properties )
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  2. How will you distinguish between : CH(3)CHO (acetaldehyde or propana...

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  3. How will youdistinguish between benzaldehyde andacetaldehyde?

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  4. Write short note on Cannizzaro's reaction.

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  5. Write short note on Wolf-Kishner reaction.

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  6. Write short note on : Benzoin condensation.

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  7. Write the chemical equations when acetaldehyde reacts with hydroxyl am...

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  8. Write the chemical equations when acetaldehyde reacts with hydroxyl am...

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  9. Write chemical equations when Acetone reacts with hydroxylamines

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  10. Write the reaction between acetone andphenylhydrazine.

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  11. Write the reaction between acetone and 2,4- dinitropheitylhydrazine.

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  12. Write the reaction between acetone and semicarbazide.

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  13. It is necessary to control pH during the reaction of carbonyl compound...

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  15. Give a chemical test to distinguish between aldehyde and ketone.

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  16. Explain the oxidation of carbonyl compounds with Tollen's reagent.

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  17. Give chemical test to distinguish between acetaldehyde and acetone.

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  18. What happens when Formaldehyde is treated with ammonia ?

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  20. Give Fehling test for the identification of aldehydic group (only equa...

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