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Write equations for conversions of ethanol

This type of question, asked 4 times: 2023, 2024, 2025, 2026. All 6 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    2023

    36 (A)
    Write the chemical equation for the following : (i) Combustion of methane (ii) Oxidation of ethanol (iii) Hydrogenation of ethene (iv) Esterification Reaction (v) Saponification Reaction
  2. Question 2

    2023

    34 (b)
    Carry out the following conversions, stating the condition(s) for each : (i) Ethanol ⟶\longrightarrow Ethene (ii) Ethene ⟶\longrightarrow Ethane (iii) Ethane ⟶\longrightarrow Chloroethane (iv) Ethanol ⟶\longrightarrow Ethanoic acid (v) Ethanoic acid ⟶\longrightarrow Ethyl ethanoate
  3. Question 3

    2024

    28
    Why is the conversion of ethanol to ethanoic acid an oxidation reaction ? Name the oxidising agent used in this conversion. Write chemical equation for this oxidation reaction. How is this reaction different from the reaction in which ethanol burns in the presence of oxygen ?
  4. Question 4

    2024

    28
    Write chemical equations for the following reactions, giving the conditions for the reaction in each case : (a) Reaction of ethanol with ethanoic acid (b) Reaction of an ester with a base (NaOH) (c) Formation of ethene from ethanol
  5. Question 5

    2025

    34 (a)
    (a) Define the term “Functional group of a carbon compound”. Write the formula of functional group present in (i) propanol and (ii) propanone. (b) Name the process of conversion of (i) ethanol to ethene and (ii) ethanol to ethanoic acid. Write the reaction equation stating the conditions required for each of the reactions to occur.
  6. Question 6

    2026

    29 (a)
    (i) What is homologous series ? Which two of the following organic compounds belong to the same homologous series ? C2H4\mathrm{C_2H_4}, C4H10\mathrm{C_4H_{10}}, C3H4\mathrm{C_3H_4}, C4H8\mathrm{C_4H_8} (ii) Write the product(s) in the following reactions : (I) CH3−CH2−OH+CH3COOH→Acid\mathrm{CH_3-CH_2-OH + CH_3COOH \xrightarrow{\text{Acid}}} (II) C2H5OH+O2→Burning\mathrm{C_2H_5OH + O_2 \xrightarrow{\text{Burning}}} (iii) Why does micelle formation take place when soap is added to water ?