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Magnesium, Mg, reacts with zinc chloride solution, ZnCl2. Magnesium chloride and zinc are made. (a) Write a balanced symbol equation for this reaction.
.............................................................................................................................................. [1] (b) Look at the ionic equation for this reaction. Mg + Zn2+
Mg2+ + Zn
Explain why this is a redox reaction. Use ideas about electrons in your answer. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [4]
Š OCR 2015
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