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    Chemistry A-Level

    Oxidation number changes

    What Oxidation number changes means in Chemistry A-Level, as defined for OCR.

    Definition of Oxidation number changes

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    Reference: OCR

    These can confirm which species is oxidised and which is reduced: the oxidising agent's oxidation number falls, and the reducing agent's oxidation number rises.
    OCR · Redox and electrode potentials

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