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Assess how changing the electric current in the electrolysis of acidified water affects the rate at which hydrogen gas is produced.
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WILLLIAM WEBSTER 5SK CHEMISTRY SC1 Electrolysis - Planning In this investigation, I will assess how changing the electric current in the electrolysis of acidified water affects the rate at which hydrogen gas is produced. The solution to be electrolysed is made up using acid and water. It is of little consequence what acid is used however in this case I will use Sulphuric acid (H2SO4). When H2SO4 is put in water it is dissociated and forms ions: H2SO4 › 2H (2+) + SO4 (2-) Ions are also present from the water in the solution: H2O › H (+) + OH (-) During the electrolysis process, the positive hydrogen ions move towards the cathode and the negative hydroxide and sulphate ions move towards the anode. At the cathode the hydrogen ions gain an electron. They are discharged and are converted into hydrogen gas: 2H (+) + 2e (-) › H2 At the anode, the hydroxide, not the sulphate...
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