Science Quiz / Chem (SPA) Quiz 2

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Can you solve the Electrolysis and Redox Questions?

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

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Created Jul 4, 2016ReportNominate
Tags:solve, spa

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