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4 November, 23:29

Be sure to answer all parts. Which product (s) form (s) at each electrode in the aqueous electrolysis of the following salts? Select as many as apply. (a) FeI2 Cathode: Anode: I - (aq) I2 (s) Fe (s) Fe2 + (aq) I - (aq) I2 (s) Fe (s) Fe2 + (aq) (b) K3PO4 Cathode: Anode: O2 (g) H2 (g) H + (aq) OH - (aq) O2 (g) H2 (g) H + (aq) OH - (aq)

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  1. 4 November, 23:44
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    FeI2

    Anode

    Fe^2+

    Cathode

    I2

    K3PO4

    Anode

    H^ + and K^+

    Cathode

    H2

    Explanation:

    In electrolysis, there are two electrodes present, the cathode and the anode. The anode is the positive electrode. This is where oxidation occurs and positive ions are formed. Species give up a electrons at the anode and the electrons travel towards the cathode.

    At the cathode (negative electrode where reduction occurs), species accept electrons according to their position in the electrochemical series. In the case of K3PO4, both hydrogen and potassium ions arrive at the cathode but hydrogen in preferentially discharged due to the position of the two ions in the electrochemical series.
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