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One mole of heptane was thermally cracked, two hydrocarbons Q and P were formed.
Q was an alkene molecule with three carbon atoms.

  1. Give the molecular formula of.
  2. Write the structural formula of Q. 
  3. Name the compound formed when Q undergoes self addition reaction. 
  4. State one disadvantage of using the product named above. 

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One mole of heptane was thermally cracked, two hydrocarbons Q and P were formed.

Q was an alkene molecule with three carbon atoms.

  1. Give the molecular formula of.
    • Q - C3H6 // CH2 CHCH3
    • P - C4H10 // CH3 CH2 CH2 CH3
  2. Write the structural formula of Q. 
    Chemf4et1p2qa3a2
  3. Name the compound formed when Q undergoes self addition reaction. 
    • Polypropene
  4. State one disadvantage of using the product named in a(iii) above. 
    • Pollutes the environment  (as it is non-biodegradable)

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