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What are Kolbe’s Reaction ? Give one exa...

What are Kolbe’s Reaction ? Give one example.

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Claisen-Schmidth Condensation: The base catalyzed cross aldol condensation between an aromatic aldehydes and an aliphatic aldehyde or a ketone is called claisen-schmidt reaction. For e.g.
`C_(6)H_(5)overset(O)overset(||)(C)-H+CH_(3)-overset(O)overset(||)(C)-CH_(3) underset(273 K)overset("Oie NaOH")rarr C_(6)H_(5)-CH_(2)-underset("Benzal acetone " + H_(2)O)(CH_(2)-overset(O)overset(||)(C)-CH_(3))`
Kolbe.s reaction : Electrolysis of an aqueous solution of sodium or potassium salt of fatty acid gives alkanes. This is known as Kolbe.s reaction.
`CH_(3)COONa(aq) overset("Electrolysis")rarr CH_(3)-CH_(3) + NaOH + H_(2) uarr + CO_(2) uarr`
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BETTER CHOICE PUBLICATION-ORGANIC COMPOUND WITH FUNCTIONAL GROUP CONTANING OXYGEN-II-Question Bank (12. 3 Physical Properties )
  1. How acetaldehyde can be used to ethyl acetate ?

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  2. Benzaldehyde does not undergo Aldol condensation. Give reason only.

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  3. What are Kolbe’s Reaction ? Give one example.

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  4. How will you distinguish between : CH(3)CHO (acetaldehyde or propana...

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  5. How will youdistinguish between benzaldehyde andacetaldehyde?

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  6. Write short note on Cannizzaro's reaction.

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  7. Write short note on Wolf-Kishner reaction.

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  8. Write short note on : Benzoin condensation.

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

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

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  11. Write chemical equations when Acetone reacts with hydroxylamines

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  12. Write the reaction between acetone andphenylhydrazine.

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

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  14. Write the reaction between acetone and semicarbazide.

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

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  16. NH3 and its derivative do not show nucleophillic addition reactions wi...

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

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

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

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  20. What happens when Formaldehyde is treated with ammonia ?

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