An organic compound ' A ' contains nitrogen and chlorine. It dissolves readily in water to give a…

An organic compound 'A' contains nitrogen and chlorine. It dissolves readily in water to give a solution that turns litmus red. Titration of compound 'A' with standard base indicates that the molecular weight of 'A' is 131±2. When a sample of 'A' is treated with aq. NaOH, a liquid separates which contains N but not Cl. Treatment of the obtained liquid with nitrous acid followed by phenol gives orange precipitate. The compound 'A' is

Solution

Anilinium chloride is acidic in solution and turns blue litmus red. With Nitrous acid, it forms benzendiazonium chloride. Which reacts with phenol in alkaline medium gives orange coloured solution where the reaction follows electrophilic substitution reaction and the electrophile is benzene diazonium ion

Asked in: JEE Main 2022 (27 Jul Shift 2)

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