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Investigating the Factors Affecting the Temperature Change Between Zinc and Copper Sulphate
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Investigating the Factors Affecting the Temperature Change Between Zinc and Copper Sulphate Introduction When zinc is added to copper sulphate solution, zinc sulphate and copper are formed. This is shown in the equations below: Zinc + copper sulphate ? zinc sulphate + copper Zn(s) + CuSO4(aq) ? ZnSO4(aq) + Cu(s) Grey Blue Colourless Red Metal Solution Solution Solid This can be described as a 'redox reaction' - a reaction which occurs when both oxidation and reduction occur together. Oxidation is described as the gain of oxygen, the loss of hydrogen or the loss of electrons. Reduction is the opposite of this - the loss of oxygen, the gain of hydrogen or the gain of electrons. In the case of zinc reacting with copper sulphate solution, however, it is only the electrons that are transferred: Cu+2SO4-2(aq) + Zn0(s) ? Zn+2SO4-2(aq) + Cu0(s) ZnO - 2e- ? Zn+2(aq) Oxidation Cu+2(aq) + 2e- ? Cu0(s) Reduction Cu+2(aq) + Zn(s) ? Zn+2(aq) + Cu(s) Redox...
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