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2 marksElectrochemistry

CSEC Chemistry · May/June 2018 · Paper 2 · Question 4(a)

The circuit in Figure 3 can be used to test if a substance conducts electricity.

Define 'electrolysis'.

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Other parts of this question

  1. 4(b)(i)Solid sodium chloride[2 marks]
  2. 4(b)(ii)1 mol dm⁻³ hydrochloric acid[2 marks]
  3. 4(b)(iii)Ethanol[2 marks]
  4. 4(b)(iv)A bar of lead touching the electrodes[2 marks]
  5. 4(c)A sample of molten lead bromide, PbBr₂, is electrolysed for three minutes with a current of 6 amperes. Calculate the mass of lead that is deposited at the…[5 marks]

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