Oxidation number, balancing redox equations, redox titrations.
Test yourself on Redox Reactions (1st PUC)
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Q1 · Redox Reactions (1st PUC) · EASY
In the reaction 2FeCl₃ + SnCl₂ → 2FeCl₂ + SnCl₄, the oxidation state of tin changes from: