23 Organic ReactionsMCQ2
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Questions and Answers

What is the number of electrons in the double bond of ethene?

  • 2 electrons
  • 4 electrons (correct)
  • 8 electrons
  • 6 electrons

    • What is the result of the polarisation of Br2 in Step 2 of the halogenation of alkenes?

  • Br2 is split into Br⁻ and Br⁻
  • Br2 is not split
  • Br2 is split into Br⁺ and Br⁺
  • Br2 is split into Br⁺ and Br⁻ (correct)

    • What is the result of the attack of Br⁺ on the C=C bond in Step 3 of the halogenation of alkenes?

  • Br⁺ does not react with the C=C bond
  • Br⁺ gains an electron to form a covalent bond (correct)
  • Br⁺ reacts with the alkene to form a new alkene
  • Br⁺ loses an electron to form a covalent bond

    • What is the characteristic of the free radical formed in Step 2 of free radical substitution?

    <p>It has an unpaired electron</p> Signup and view all the answers

    What is the product of the reaction between a methyl radical and a Cl₂ molecule in Step 3 of free radical substitution?

    <p>Chloromethane and a Cl radical</p> Signup and view all the answers

    What is the result of the reaction between ethanoic acid and HCl?

    <p>The loss of a hydrogen atom</p> Signup and view all the answers

    What is the primary requirement for ionic addition reactions of Br₂, Cl₂, or HCl across C=C in ethene?

    <p>Heat</p> Signup and view all the answers

    What type of reaction involves the removal of a small molecule from a large molecule, leaving a C=C behind?

    <p>Elimination reaction</p> Signup and view all the answers

    What is the product of the reaction between a carboxylic acid and an alcohol?

    <p>Ester</p> Signup and view all the answers

    What type of reaction involves the use of an oxidising agent, such as Potassium Permanganate or Sodium Dichromate?

    <p>Redox reaction</p> Signup and view all the answers

    What is the characteristic of a tertiary alcohols OH group?

    <p>Attached to 3 other carbons</p> Signup and view all the answers

    What is the type of reaction that involves the substitution of a functional group for a hydrogen atom on an alkane?

    <p>Substitution reaction</p> Signup and view all the answers

    What is the catalyst used in certain substitution reactions?

    <p>Ni catalyst</p> Signup and view all the answers

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