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6 marksElectrochemistry

CSEC Chemistry · January 2019 · Paper 2 · Question 4(c)(ii)

Sodium chloride is a typical salt of sodium metal. A concentrated sodium chloride solution (brine) can undergo electrolysis when it is used as an electrolyte in an electrolytic cell using inert electrodes.

Write the half equations, including state symbols, for the reaction that occurs at the anode and cathode during the electrolysis of concentrated sodium chloride solution (brine).

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Other parts of this question

  1. 4(a)(i)Define EACH of the following terms: Atomic number[2 marks]
  2. 4(a)(ii)Define EACH of the following terms: Mass number[2 marks]
  3. 4(b)(i)Draw a diagram to show the arrangement of electrons in a sodium atom.[2 marks]
  4. 4(b)(ii)State the period to which the element sodium belongs in the periodic table.[1 mark]
  5. 4(b)(iii)Describe the type of bonding in sodium metal.[2 marks]
  6. 4(c)(i)Define the term 'electrolysis'.[2 marks]

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