Name one compound containing H+ ions and another containing I- ions, which would be suitable for these reactions.

Ezplain why zinc is said to be oxidised in its reaction.

Complete the half equation to show the oxidising action of bromine.
_I- ->I2+____

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  1. HCl would be suitabl as a source for H^+.
    KI would work as a cation for I^-.

    Zn is oxidized because it goes from an oxidation state of zero to one of +2. That is a loss of electrons (2 per atom of Zn) and oxidation is defined as the loss of electrons.

    2I^- ==> I2 + 2e
    Notice this is a loss of electrons, too, and that is why iodide ion is oxidized.

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