Consider the following substances 1 . C H 3 C ≡ C C H 3 2 . C H 3 C H 2 C ≡ C H 3 . C H 3 C H = C H C H 3 4 . C H 3 C H 2 C H = C H 2 Which of the following reagent can be used to distinguish the comp

Question

Consider the following substances 1 . C H 3 C ≡ C C H 3 2 . C H 3 C H 2 C ≡ C H 3 . C H 3 C H = C H C H 3 4 . C H 3 C H 2 C H = C H 2 Which of the following reagent can be used to distinguish the compound (2) from the rest of the compounds?

TestHub · Accepted Answer

Compound (2) has acidic hydrogen (acetylinic hydrogen), which can be replaced.

$C H_{3} - C H_{2} - C \equiv C H + {[A g {(N H_{3})}_{2}]}^{+} O H^{-} \to \underset{(White ppt)}{C H_{3} - C H_{2} C \equiv C A g} + H_{2} O + 2 N H_{3}$

$C H_{3} C H_{2} C \equiv C H + {[C u {(N H_{3})}_{2}]}^{+} O H^{-} \to \underset{(Red ppt.)}{C H_{3} C H_{2} C \equiv C C u} + H_{2} O + 2 N H_{3}$

Compounds 1, 3 and 4 have no acidic hydrogen. Therefore, they do not react with reagent option D.

Chemistry - Aromatic Hydrocarbon Question with Solution | TestHub

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