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William Murdoch A LEVEL PRACTICAL ASSESSMENT An Investigation of the Variation of Electrode Potential with Electrolyte Concentration Aim: The aim of the experiment is to investigate the variation in the potential of a silver electrode as the electrolyte concentration is varied. Apparatus: 1.0 molar CuSO4(aq) Copper metal Electrode 0.1 molar AgNO3(aq) Silver metal Electrode 100ml volumetric flask (x4) Labels Bungs (x4) Distilled water Funnel Dropper Pipette and filler 100ml Pyrex beakers (x10) Glass paper Filter paper Saturated KNO3(aq) High resistance voltmeter Crocodile clips Wire Safety goggles Method: 10cm³ of 0.1 molar AgNO3(aq) was pipetted into a 100cm³ volumetric flask. Distilled water was added to the flask to make it up to just below the 100cm³ mark. With a bung in the top, the solution was shaken to make it homogenous. A few more drops of water were added to the flask so that the meniscus was level with the 100cm³ mark. The flask was labelled as having a 0.01 molar concentration. From the 0.01 molar flask, 10cm³ of the solution was pipetted into an empty...

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