AS Organic Chemistry Revision

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1. Which of the following is a correct propagation equation for the monobromination of ethane?

  • C2H5. + Br2 -> C2H5Br. + Br
  • C2H5. + Br2 -> C2H5Br + Br.
  • C2H6. + Br2 -> C2H5Br + Br.
  • C2H5. + Br. -> C2H5Br
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2. Which of the following shows the correct conditions for the hydration of ethene?

  • Dilute H3PO4, 300 C, 100 kPa
  • Concentrated H3PO4, 300 K, 60-70 atm
  • Concentrated H3PO4, 300 C, 60-70 atm
  • Dilute H3PO4, 300 C, 60-70 atm

3. Which of the following will be the major product for the reaction of Br2 and But-1-ene?

  • 2-bromobutane
  • 2-bromobutene
  • 1-bromobutane
  • 1-bromobutene

4. Define the term Structural Isomers.

  • Molecules which have the same molecular formula but a different structural formula.
  • Molecules which have the same molecular formula but a different skeletal formula.
  • Molecules which have the same molecular formula but a different arrangement in space.
  • Molecules which have the same general formula but a different structural formula.

5. Which two species are indistinguishable using only IR spectroscopy?

  • Esters and Carboxylic Acics
  • Ethane and Ethene
  • Ethane and Butane
  • The-OH in alcohols and the -OH in carboxylic acids.
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