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When a pair of copper wires are connected to the (+) and (–) terminals of a 9–V battery and immersed in a solution containing I- ions, one of the wires becomes coated with I2. Besides simply wiping off the wire, how else could you remove the I2 coating?

  • Chemistry -

    Several ways.
    1. Dissolve the I2 in KI solution.
    2. Dissolve the I2 in CCl4, chloroform, or some other non-polar organic solvent.
    3. Dissolve the I2 is Na2S2O3.
    4. Reverse the polarity of the wires by switching the leads at the battery.

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