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Whether the voltage affects the amount of gas produced during the electrolysis of sodium chloride solution.
Member rating: No Rating | Words: | Submitted: Wed Nov 12 2003
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ELECTROLYSIS COURSEWORK LIAM WILLIAMS 11Hr An investigation into whether the voltage affects the amount of gas produced during the electrolysis of sodium chloride solution. Prediction At the positive electrode: Na+ and H+ will be attracted. In theis case hydrogen gas will be given off because it is the least reactive of the two. 2H+ + 2e H2 At the negative electrode: Cl- and OH- will be attracted. In this case, Cl2 will be given off because it is a halide i.e. a group 7 element. 2Cl- - 2e Cl2 I predict that the higher the voltage, the greater the current will be. So when the voltage is increased at the cathode - the current will be higher, this will mean there are more electrons so more gas will be given off. This is because the flow of electrons and the gas given off are proportional. PRELIMINARY WORK We conducted preliminary work, to establish a number of things regarding our...
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