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Question 6 Electrolysis can be used to remove unwanted hair from the skin. The hair is first coated with a layer of gel containing ions in solution. The positive electrode is connected to a patch to the skin. The negative electrode is connected to the hair. Electricity flows through the gel and causes electrolysis of the body fluid around the hair follicle. (a) Metal wires conduct electricity to the electrodes. Explain how metals conduct electricity. [2C] (b) Explain why the gel containing ions in solution can conduct electricity. [2C] The body fluid is a solution that contains sodium chloride. The electricity causes the electrolysis of a small amount of this solution. This solution contains hydrogen ions that move to the negative electrode. (i) The half equation represents the reaction at the negative electrode. 2H++2eH2 Explain why this reaction is a reduction. Complete the half equation for the reaction at the positive electrode