Electrolysis

Chemistry (Science Paper 2) · Chapter 7 · 6. Electrolysis

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Visual lesson Beta
1. Part 1: Electrolytes, ions and molten lead bromide15 slides
2. Part 2: Water, copper sulphate and applications15 slides
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Notes Beta
7 sections with key terms, formulas and exam tips.
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Flashcards Beta
31 cards for quick recall of key terms and facts.
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Practice
65 board-style questions with instant checks: Multiple choice 21, Short answer 20, Assertion and reason 5, Long answer 5.
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Chapter test Free
Short and long chapter tests in board pattern, with results and analysis.
- Chapter test (long) — Electrolysis · 40 marks · 60 min
- Chapter test (short) — Electrolysis · 20 marks · 30 min
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Electrolytes and non-electrolytes; strong and weak electrolytes; substances with molecules only, ions only or both
Terms: electrolysis, electrode, anode, cathode, anion, cation; oxidation and reduction as loss and gain of electrons
Migration of ions and selective discharge; activity series (Na, Mg, Fe, Cu)
Electrolysis of molten lead bromide
Electrolysis of acidified water with platinum electrodes
Electrolysis of aqueous copper(II) sulphate with copper electrodes and with platinum electrodes
Applications: electroplating with nickel and silver; electrorefining of copper