Reactions of Hydrocarbons

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1) Complete the following table indicating a positive or a negative test.

  Br2 KMnO4
1,3- cyclopentadiene    
Cyclohexane    
Hexane    
Benzene    

 

2) The higher the vapor pressure of a liquid at a given temperature, the higher the volatility and the lower the normal boiling point of the liquid. Investigate the boiling points of pentane, dichloromethane and toluene and arrange them in decreasing order of volatility.

 3) Using chemical reactions indicate which of the following compounds will produce more carbon dioxide by complete combustion. Hexane, cyclohexane or 2-methyl-pentane.

4) Draw the structural formula of the alkene that gives 2,3-dibromo-2-methyl-pentane by reaction with bromine.

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