Reaction types, mechanisms, nucleophiles and electrophiles

Reaction types, mechanisms, nucleophiles and electrophiles Quiz

Spec 10A · Edexcel International A Level Chemistry: Quiz

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5 questions, one answer each

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  1. 1. Which species is a nucleophile?

    • A. H⁺
    • B. OH⁻
    • C. Br₂ (δ+ end)
    • D. CH₃CH₂⁺

  2. 2. Ethanol to ethanal is classified as:

    • A. Reduction
    • B. Substitution
    • C. Oxidation
    • D. Addition

  3. 3. An alkene reacts with HBr because:

    • A. The C=C bond is electron-rich and attracts the δ+ hydrogen
    • B. The C–H bond is polar
    • C. The carbon is δ+ and attracts nucleophiles
    • D. Bromide is a nucleophile that attacks carbon first

  4. 4. Heterolytic fission produces:

    • A. Two radicals
    • B. Two neutral molecules
    • C. A cation and an anion
    • D. A polymer

  5. 5. Halogenoalkanes react with nucleophiles because:

    • A. The carbon–halogen bond is non-polar
    • B. The carbon is δ+
    • C. The halogen is δ+
    • D. The molecule is electron-rich

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