Hydrocarbons - Result Question 96

84. Give one characteristic test which would distinguish $CH _4$ from $C _2 H _2$.

(1979,1 M)

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Solution:

  1. Acetylene can be distinguished from methane using Tollen’s reagent :

$ C _2 H _2+AgNO _3 \xrightarrow{NH _3(a q)} H \underset{\text { White ppt. }}{C \equiv CAg \downarrow} $

No such reaction occur with methane.