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Investigate the factors affecting the enthalpy change during a displacement reaction.
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The Task To investigate the factors affecting the enthalpy change during a displacement reaction. Background Knowledge In this investigation a displacement reaction will be observed. A displacement reaction occurs when more reactive metal displaces, (or removes) a less reactive metal from a solution of its salt. Also known as chemical bullying because a more reactive metal effectively bullies the original metal out of its compound. In this investigation zinc and copper sulphate will be reacted together. Zinc is the more reactive metal here, so the copper is displaced from the copper sulphate solution. Zinc + Copper sulphate ?inc sulphate + Copper Zn (s) + CuSO4 (aq) ?nSO4 (aq) + Cu (s) After the reaction it will be observed that the solution will change from blue to clear, colourless. The copper discharged will be observed as a salmon pink deposit in the base of the vessel the reaction occurs in. Reactions like this can be used to purify metals...
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