4. Two of unsaturated hydrocarbon having the general formula CnH2n - 2 belong to different classes of compounds, their density vapor neon is 3.4. Both substances decolorized bromine water, one of which forms a precipitate with an ammoniacal solution of silver oxide. Determine hydrocarbons, taking into account that they have a branched structure, and one of them is used for the production of synthetic rubber. Write the equations of all the reactions mentioned.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)