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1 Chlorine and hydrogen are produced from the electrolysis of hydrochloric acid a) Explain what is meant by electrolysis. ........................................................................................................................... ........................................................................................................................... b) Describe the test to show that chlorine gas is produced. ........................................................................................................................... .......................................................................................................................... Your turn: 2. The ions present in sodium chloride solution are sodium ions, Na+ chloride ions, Cl- hydrogen ions, H+ hydroxide ions, OH- A direct electric current is used to electrolyse sodium chloride solution. a) Which ions will be attracted to the cathode during the electrolysis of sodium chloride solution? ............................................................................................................................................... b) One of the products of the electrolysis is chlorine. The half equation for the production of chlorine is 2Cl- Cl2 + 2e- Explain how the half equation shows that the chloride ions are oxidised. ............................................................................................................................................. ............................................................................................................................................. c) Suggest why the solution remaining at the end of electrolysis is alkaline. ............................................................................................................................................... ...................................................................................................................................PDF Image | How to work with Electrolysis
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