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Electrolysis of Sodium Chloride - NaCl Plan Aim I aim to find out how the concentration of Sodium Chloride (NaCl) affects the current. Hypothesis Electrolysis is the decomposition of a substance or compound with the use of electricity. Electricity is the free-flow of electrons (or charged particles). An electrical current is only able to pass through a substance if the electrons (or charged particles) are able to move. Graphite's electrons are free to move, hence it is a conductor of electricity. Ions enable charges to move freely in solutions, and therefore also are conductors. There are two graphite electrodes; the negative electrode - the cathode, and the positive electrode - the anode. In this experiment the ions present are; NaCl = Na+, Cl¯ H2O = OH¯ and H+. Therefore; At the cathode; Na+, H+ The most reactive out of these remains in the solution ; 2 H+ +2e¯= H2 (g) Here, we experience a gain of electrons, called a...

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