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प्रश्न
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)
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उत्तर
Electron-withdrawing groups (EWG) are attached to the benzene ring in benzoic acid. These EWG polarise the O-H bond of the −COOH group and lose H as H+. Thus, the order is:
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संबंधित प्रश्न
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.
Distinguish between the following : Benzoic acid and methyl benzoate
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:
CH3CH2CH(Br)COOH, CH3CH(Br)CH2COOH, (CH3)2CHCOOH, CH3CH2CH2COOH (acid strength)
Write the reactions involved Hell-Volhard Zelinsky reaction?
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.
Acidity of BF3 can be explained on the basis of which of the following concepts?
When propionamide reacts with Br2 in the presence of alkali the product is ______.
Describe the action of alcoholic potassium hydroxide (alc. KOH) on ethyl bromide
