February/March 2026 Paper 62

2026 · 4 questions · 27 parts · 40 marks

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1(a)
A student uses electrolysis to electroplate a zinc rod with silver.
The student uses the apparatus shown in Figure 1.1.
Figure 1.1, an electroplating cell: a beaker containing electrolyte, with a cathode and an anode dipping into it and both connected to a power supply; labelled power supply, cathode, anode, electrolyte and A (the beaker)
1(a)(i)Easy1 mark
Name the item of apparatus labelled A in Figure 1.1.
1(a)(ii)Easy1 mark
The zinc rod is used as the cathode in Figure 1.1.
Identify the element that is used as the anode.
1(a)(iii)Easy2 marks
Suggest a suitable electrolyte.

Your answer

1(b)
A teacher uses the apparatus in Figure 1.2 to make chlorine gas by electrolysis. Chlorine gas is toxic.
Figure 1.2: a side-arm test-tube of molten lead(II) chloride heated from below, with two electrodes from a power supply dipping into it and chlorine gas leaving through the side arm
1(b)(i)Easy2 marks
Describe how the teacher can confirm that chlorine gas comes out of the side arm during electrolysis.

Your answer

1(b)(ii)Easy1 mark
State one safety precaution that should be taken due to the formation of chlorine gas in this experiment.