The compound, which decolorize bromine water but does not react with Tollens reagent is:

Question

The compound, which decolorize bromine water but does not react with Tollens reagent is: (A) ethene (B) ethyne (C) propane (D) ethane

Tardigrade Admin · Accepted Answer

Ethene and ethyne are unsaturated hydrocarbons, hence ' they decolourise-bromine water. But ethene does not react with Tollen's reagent while acetylene give white .silver acetylide with it.

C H_{2} = C H_{2} + B r_{2} ⟶ C H_{2} B r - C H_{2} B r

Q. The compound, which decolorize bromine water but does not react with Tollens reagent is:

ethene

ethyne

propane

ethane

Ethene and ethyne are unsaturated hydrocarbons, hence ' they decolourise-bromine water. But ethene does not react with Tollen's reagent while acetylene give white .silver acetylide with it. CH2​=CH2​+Br2​⟶CH2​Br−CH2​Br

Ethene and ethyne are unsaturated hydrocarbons, hence ' they decolourise-bromine water. But ethene does not react with Tollen's reagent while acetylene give white .silver acetylide with it.
$C H_{2} = C H_{2} + B r_{2} ⟶ C H_{2} B r - C H_{2} B r$