Topic 6: Organic Chemistry

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1. What will form from the strong reflux of a primary alcohol with potassium dichromate(VI)?

  • A carboxylic acid
  • Nothing - it will remain an alcohol and potassium dichromate will stay orange
  • A ketone
  • An aldehyde
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Other questions in this quiz

2. What is the difference between a ketone and an aldehyde?

  • A ketone can be formed from the oxidation by distillation of a primary alchol
  • A ketone has an C=O group in the middle of it's molcule, thus with an alkyl group on each side. In an aldehyde the C=O is found at the end of the molecule with an H and an alkyl group
  • An aldehyde has an C=O group in the middle of it's molcule, thus with an alkyl group on each side. In a ketone the C=O is found at the end of the molecule with an H and an alkyl group
  • An ketone will form a dark red precipitate of Copper(I) Oxide with Fehling's solution but an aldehyde will not

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

  • (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 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) No, It contains flourine (b) No, there is no hydrogen (c) Yes, it has the full number atoms bonded to each C

4. What are some of the issues with bioethanol and biodisel?

  • It is non renewable
  • It is not as close to carbon neutral as some fossil fuels such as coal
  • It uses large areas of land and has substantial costs in processing and manufacture
  • Engines will have to be drastically remodeled to run it

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

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

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