The scheme below shows several reactions starting with propane. Study the scheme and answer the questions which follow.

Question

The scheme below shows several reactions starting with propanol. Study the scheme and answer the questions which follow.
         

1. Name gas R     
2. Name and draw the structural formula of compound Q.   
3. What conditions and reagents are necessary to convert S to CH₃CH₂COOCH₂CH₃    
   Reagents                                     Conditions                                 
4. Write an equation for the reaction that takes place when equal volumes of chlorine gas react with propane.  
5. The table below shows some properties of organic compounds U, V and W. Use the information to answer the questions that follow.

   	W	V	U
   Reaction with liquid bromine	Decolourises bromine very fast	No reaction	Decolourises bromine liquid slowly
   Combustion	Burns with yellow smoky flame	Burns with a blue flame leaving no residue	Burns with a yellow sooty flame
   Reaction with Conc.H2SO4	No reaction	It is dehydrated to form compound U	Reacts to form V

   To which homologous series do the compounds belong?    
   U-
   V-
   W-
6. CH₂ = CH – CH₃ when heated under high temperatures and pressures forms a solid with large molecular mass.
   1. Write the equation for the reaction which involves the formation of the solid.    
   2. Name the solid and give one use of the solid     

Answer 1

1. Hydrogen
2. Propene
   
3. Reagents; ethanol
   Conditions: 1. Drops of Conc. H₂SO₄    2. Warm
4. CH₃CH₂CH₃(g) + Cl₂(g) → CH₃CH₂CH₂Cl +HCL
5. U-Alkene
   V-Alkanol
   W-Alkyne
6.  
   1. 
      n(CH₂=CHCH₃)→  
   2. Polypropene
      Making ropes,crates