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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Which acid of the pair shown here would you expect to be stronger? CH2FCO2H or CH2ClCO2H

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प्रश्न

Which acid of the pair shown here would you expect to be stronger?

CH2FCO2H or CH2ClCO2H

अति संक्षिप्त उत्तर
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उत्तर

FCH2COOion is more stable than ClCH2COO–  ion due to stronger −I effect of F than Cl. Hence FCH2COOH is a stronger acid than ClCH2COOH.

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पाठ 8: Aldehydes, Ketones and Carboxylic Acids - Intext Questions [पृष्ठ २५४]

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एनसीईआरटी Chemistry Part 1 and 2 [English] Class 12
पाठ 8 Aldehydes, Ketones and Carboxylic Acids
Intext Questions | Q 8.8 (ii) | पृष्ठ २५४

संबंधित प्रश्‍न

How is 1-nitropropane prepared from suitable oxime?


How are  2 - nitropropane prepared from suitable oxime?


Although phenoxide ion has more number of resonating structures than carboxylate ion, carboxylic acid is a stronger acid than phenol. Give two reasons.


Why pKa of F-CH2-COOH is lower than that of Cl−CH2−COOH?


Which acid of the pair shown here would you expect to be stronger?

CH3CO2H or CH2FCO2H


Which acid of the pair shown here would you expect to be stronger?

CH2FCH2CH2CO2H or CH3CHFCH2CO2H


Which acid of the pair shown here would you expect to be stronger?


Arrange the following compounds in increasing order of their property as indicated:

Benzoic acid, 4-Nitrobenzoic acid, 3, 4-Dinitrobenzoic acid, 4-Methoxybenzoic acid (acid strength)


Account for the following:

Carboxylic acid is a stronger acid than phenol.


 Arrange the following compounds in increasing order of their property as indicated:
 F - CH2COOH, O2N - CH2 COOH CH3 COOH,HCOOH - acid character. 


Complete the following reaction sequence.

\[\begin{array}{cc}
\ce{O}\phantom{...............................................}\\
||\phantom{...............................................}\\
\ce{CH3 - C - CH3 ->[(i) CH3MgBr][H2O] (A) ->[Na metal][Ether] (B) ->[CH3 - Br] (C)}
\end{array}\]


Assertion: Formaldehyde is a planar molecule.

Reason: It contains sp2 hybridised carbon atom.


Na2CO3 cannot be used in place of (NH4)2CO3 for the precipitation of the V group because ______.


Describe the action of alcoholic potassium hydroxide (alc. KOH) on ethyl bromide


Describe the action of alcoholic potassium hydroxide (alc. KOH) on isopropyl bromide.


An ester is boiled with KOH. The product is cooled and acidified with conc. HCL. A white crystalline acid separates. The ester is:


The correct order of decreasing acidity of the following aliphatic acids is:


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