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9. Hydricarbon — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry9. Hydricarbon1 Mark
MCQ
Acetylene gives
  • ✓
    White precipitate with $AgN{O_3}$ and red precipitate with $C{u_2}C{l_2}$
  • B
    White precipitate with $C{u_2}C{l_2}$ and red precipitate with $AgN{O_3}$
  • C
    White precipitate with both the reagents
  • D
    Red precipitate with both the reagents
✓

Answer

Correct option: A.
White precipitate with $AgN{O_3}$ and red precipitate with $C{u_2}C{l_2}$
a
(a) $C{H_3} \equiv \,\,\,CH\,\,\, + \mathop {AgN{O_3}}\limits_{{\rm{(Ammonical)}}} \to \mathop {Ag - C \equiv C - Ag}\limits_{{\rm{White ppt}}{\rm{.}}} $

$C{H_3} \equiv CH\,\,\, + \mathop {CuC{l_2}}\limits_{{\rm{(Ammonical)}}} \to \mathop {Cu - C \equiv C - Cu}\limits_{{\rm{Red ppt}}{\rm{.}}} $

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