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Redox Reactions.
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| Submitted: Thu Jul 11 2002
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Redox Reactions. AIM In this practical suitable reactions will be carried out in an attempt to place a number of oxidising agents in order of oxidising strength. The oxidising agents are reduced according to the following redox half equations: A. B. C. D. E. F. EXPERIMENTS Experiment 1 Consider the two oxidising agents iodine, I2, and iron (III) ions, Fe3+. Their reduction can be represented as follows: Add a little of a solution of iron (III) ions to a solution of iodide ions. Observation: When the yellowy-orange solution of Fe3+ ions was added to a colourless solution of iodide ions the solution darkened to a brown colour. Addition of a few drops of starch (colourless in appearance), turned the mixture blacky/blue indicating that iodine is present. Ionic Equation For This Reaction: Inference: Since the Fe3+ has oxidised the 2I- to I2 then the order of oxidising strength is: Fe3+> I2 Experiment 2 Consider the two oxidising agents chlorate ions, ClO-, and iron (III) ions, Fe3+. Their reduction can be...
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