X is decolourized when alkyl benzene are readily oxidized to benzoic acid, X is
Correct answer: D. Acidified KMnO4 or K2Cr2O7
- A. Aqueous KMnO4 or K2Cr2O7
- B. Cold dilute alkaline KMnO4 or K2Cr2O7
- C. Alcoholic KMnO4 or K2Cr2O7
- D. Acidified KMnO4 or K2Cr2O7
Explanation
Alkyl benzenes are oxidized to benzoic acid by nascent oxygen, which is produced by reacting acidified KMnO4 or K2Cr2O7 with the alkyl benzene. Acidified conditions enhance the oxidizing power of these agents, leading to efficient conversion. The other options (A, B, C) are incorrect because they do not provide the necessary acidic environment for efficient oxidation of alkyl benzenes to benzoic acid.
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About Chemistry of Hydrocarbons
Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.
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