Science Quiz / Chem (SPA) Quiz 2

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Can you solve the Electrolysis and Redox Questions?

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Name a metal that could be extracted via electrolysis.
___________ occurs at the anode during electrolysis.
Molten lead (II) bromide is electrolysed. What is formed at the cathode?
When dilute aqueous sodium chloride is electrolysed, what is evolved at the anode?
When potassium dichromate (VII) acts as an oxidising agent, it is reduced to chromium (III). What colour is chromium (III)?
A coin is to be electroplated with platinum. At which electrode should the coin be placed?
When water was electrolysed, 20cm3 of oxygen was evolved. What volume of hydrogen was evolved?
When a substance is oxidised, it loses _________.
A simple cell is formed using copper and iron in aqueous sodium chloride. Name a metal which could replace iron to form a more powerful cell.
What is the oxidation state of sulfur in ZnSO4?

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