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Question 19

This question is about chlorine and its compounds.

a.

Give an equation to show how chlorine forms an acidic solution in water.

[1]
b.

Give an equation for the reaction between chlorine and cold, dilute aqueous sodium hydroxide.

[1]
c.

In acidic conditions, ClO3−\text{ClO}_3^-ClO3−​ ions oxidise Cl−\text{Cl}^-Cl− ions to form Cl2\text{Cl}_2Cl2​.

  • Deduce a half-equation for the oxidation of Cl−\text{Cl}^-Cl− to Cl2\text{Cl}_2Cl2​.
  • Deduce a half-equation for the reduction of ClO3−\text{ClO}_3^-ClO3−​ to Cl2\text{Cl}_2Cl2​.
  • Deduce the overall equation for this reaction.
[3]
d.

Give the equation for the reaction of solid sodium chloride with concentrated sulfuric acid. State the role of the chloride ions in this reaction.

[2]
e.

Draw the shape of the ICl2−\text{ICl}_2^-ICl2−​ ion. Include any lone pairs of electrons on the central atom that influence the shape.

[1]
f.

Chlorine forms an ion with the Group 13 (Group 3) element gallium (Ga\text{Ga}Ga). State and explain the bond angle in GaCl2+\text{GaCl}_2^+GaCl2+​.

[2]
Markscheme

Bonding Questions

  1. A Level
  2. /Chemistry
  3. /Bonding

54 exam-style questions on AQA A Level Chemistry Bonding, covering Ionic bonding, Nature of covalent and dative covalent bonds, Metallic bonding, Bonding and physical properties, Shapes of simple molecules and ions, Bond polarity, and Forces between molecules. Each one has a worked solution and a mark scheme showing where the marks go.

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