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How will you detect the presence of carb...

How will you detect the presence of carboxyl group in a compound ?

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The presence of carboxyl group in a compound is detected by sodium bicarbonate test. A pinch of given compound is added to strong solution of `NaHCO_(3)`. The evolution of `CO_(2)` gas accompanied by brisk effervescence shows the presence of carboxyl group.
`underset("Carboxylic acid")underset()(RCOOH)+NaHCO_(3)rarrunderset("Sod. salt")underset()(RCOONa)+H_(2)O+CO_(2)`
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DINESH PUBLICATION-CARBOXYLIC ACIDS -ADDITIONAL IMPORTANT QUESTIONS
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  2. Fluorine is more electronegative than chlorine but p-fluorobenzoic aci...

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  3. CH(3)COO^(-) ion is more stable than C(2)H(5)O^(-) ion. Assign reason.

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  4. Peroxyacetic acid is a weaker acid than acetic acid. Explain.

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  5. Why are boiling of aldehydes and ketones lower than those of the corre...

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  6. Which out of each pair is expected to be a stornger acid ? (a) CH(3)...

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  7. What is glacial acetic acid ? Why is it so named ?

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  8. How will you prepare 2-methylbutanoic acid from butan-2-01 ?

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  9. How will you convert propionic acid to acetic acid ?

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  10. How will you prepare butanoic acid from 1-bromopropane?

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  11. Suggest an oxidising agent to convert (CH(3))(2)C=CHCOCH(3)" to "(CH(3...

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  12. Explain Why : (i) Carboxylic acids are stronger acids than alcohols....

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  13. How will you detect the presence of carboxyl group in a compound ?

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  14. Why is CH(2)=CH-COOH a stronger acid than CH(3)CH(2)COOH?

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  15. Out of but-3-enoic acid and but-3-yonic acid, which is a stronger acid...

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  16. Carboxylic acids with five or less carbon atoms are water soluble whil...

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  17. Assign a suitable structure to C(6)H(8)O(2) that can give iodoform tes...

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  18. Arrange the following compounds in the increasing order of their prope...

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  19. From which carboxylic acid and alcohol are the following esters derive...

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  20. Salicylic acid is treated with bromine under two different conditions ...

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