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The pKa value of formic acid is smaller ...

The `pK_a` value of formic acid is smaller than that of acetic acid.( True/ false) explain it.

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Carboxylic acids are distinctly acidic and ionise in water to give H_3 O^+ ions. In general, electron withdrawing groups increase the acidity of carboxylic acids while electron donating groups decrease the acidity of the carboxylic acid. The electron releasing groups such as -CH_3 -OH, -NH_2 and -OCH_3 make benzoic acid weaker while electron withdrawing groups such as -CI, -NO_2 , etc., make benzoic acid stronger. The ortho isomer of every substituted benzoic acid is the strongest among the three isomers due to effect known as ortho effect. Carboxylic acids neutralise alkalies, decompose carbonates and bicarbonates evolving CO_2 with brisk effervescence. The pK_a value of formic acid is less than that of acetic acid.True or False.

Formic acid is more acidic than

The pKa values of stronger acids are :

pK_a value of m-hydroxybenzoic acid is less / more than that of benzoic acid.

Formic acid is stronger acid than acetic acid. Explain.

pK_a value of 4- nitrobenzoic acid to lower than that of benzoic acid . Explain

MODERN PUBLICATION-ALDEHYDES ,KETONES AND CARBOXYLIC ACIDS-QUICK MEMORY TEST ( A. SAY TRUE OR FALSE )
  1. Aldehydes and ketones react with electrophiles but not with nucleophil...

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  2. Wolff Kishner reduction of acetophenone gives toluene.

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  3. Acetaldehyde can be prepared by the distillation of calcium acetate.

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  4. Acetaldehyde can be reduced to ethane in the presence of LiAlH4.

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  5. Benzaldehyde cannot undergo Cannizzaro reaction.

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  6. Aldehydes are less easily oxidised than ketones.

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  7. Acetaldehyde cyanohydrin on hydrolysis gives lactic acid.

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  8. Benzaldehyde reduces Fehling solution.

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  9. Benzaldehyde forms addition product with sodium bisulphite but acetoph...

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  10. Ketones give nucleophilic addition reactions more readily than aldehyd...

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  11. Calcium formate on heating gives acetaldehyde.

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  12. The pKa value of formic acid is smaller than that of acetic acid.( Tru...

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  13. The carbon-oxygen bond lengths in formic acid are equal.

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  14. Nitration of benzoic acid gives m-nitrobenzoic acid.

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  15. During the reaction of carboxylic acid with NaHCO2 the carbon of the C...

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  16. When benzoic acid is heated with soda lime, benzene is formed.

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  17. Acetate ion is a stronger acid than methoxide ion.

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  18. Ethanoic acid liberates hydrogen with sodium metal.

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  19. Me3 C CH2 COOH is more acidic than Me3 SiCH2 COOH.

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  20. Formic acid gives silver mirror test with Tollen's reagent.

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