Redox Reaction and Titration Notes

Redox Reaction and Titration Notes - Redox Titrations...

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Redox Titrations
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Oxidation-reduction reactions involve a transfer of electrons. The oxidising agent accepts electrons and the reducing agent gives electrons. In working out the equation for a redox reaction we can use the half- equation method. In this method we use the half-equation for the oxidising agent and the half-equation for the reducing agent then add them together.
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Examples of half-reaction equations Iron(III) salts are reduced to iron(II) salts. The half equation is Fe 3+ Fe 2+ For the equation to balance the charge on the RHS must equal the charge on the LHS. This can be accomplished by inserting an electron on the LHS Fe 3+ + e - Fe 2+
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When chlorine acts as an oxidising agent it is reduced to Cl - ions Cl 2 2Cl - To obtain a balanced equation 2 electrons muct be inserted on the LHS Cl 2 + 2e - 2Cl -
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solutions it is reduced to a manganese(II) salt MnO 4 - + 8H + + 5e - Mn 2+ + 4H 2 O Potassium dichromate(VI)
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Redox Reaction and Titration Notes - Redox Titrations...

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