Topic 6: Organic Chemistry

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1. The C=C double bond is....

  • ...made of 2 pi bonds, overlapping end-on
  • ....made of p-orbitals that overlap sideways to form a sigma bond, split in electron density above and below the nuclei plane
  • ... not quite twice as strong as the C-C bond, due to the presence of the pi bond
  • ... more than twice as strong as the C-C bond due to the electron-dense sigma bond
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2. What would this be called: CH3C(CH3)2CH2CH2OH

  • 3,3-dimethylbutan-1-ol
  • 2,2,-dimethylbutan-4-ol
  • 2-ethylbutan-4-ol
  • 3-methylhexanol

3. What is the C=C bond attacked by in addition reactions?

  • An electrophile, such as H (d+)
  • A nucleophile, such as Cl (d-)
  • A base, such as OH-
  • A nucleophile such as H (d+)

4. Is C2F4 (a) An organic compound? (b) A Hydrocarbon? (c) Saturated?

  • (a) No, it has a halogen and no hydrogen (b) No, it doesn't contain H and Cs only (c) Yes, carbon can only make 4 bonds
  • (a) Yes. It contains mainly carbon (b) No, it contains flourine (c) No, It has a double bond
  • (a) Yes because it has Cs (b) Yes because it is organic (c) No because the carbons can have 2 more atoms bonded
  • (a) No, It contains flourine (b) No, there is no hydrogen (c) Yes, it has the full number atoms bonded to each C

5. What is the catalyst for the hydration of ethene into ethanol?

  • Potassium (VIII) manganate
  • Phosphoric acid
  • Iron
  • Nickel

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