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  • Which of the following species are involved in the carbylamine test? (i) R-NC (ii) CHCl_{3} (iii) COCl_{2} (iv) NaNO_{2}+HCl

Which of the following species are involved in the carbylamine test?

(i) R-NC

(ii) CHCl_{3}

(iii) COCl_{2}

(iv) NaNO_{2}+HCl

Answers (1)

Option (i) and (ii) are the correct answers.

Explanation: Amine when reacts with a mixture of \text {CHCl}_{3} and \text {KOH} gives out alkyl isocyanate. This reaction is called a Carbylamine reaction.

Here, \text {R-NH}_{2}+\text {CHCl}+\text {3KOH}\rightarrow \text {RNC}+\text {3KCl}+\text {3H}_{2}\text {O} Only \text {RNC} and \text {CHCl}_{3} are involved in carbylamine reaction.

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