shanyang_111709_173544Worksheet_12-ElectroChemistry

shanyang_111709_173544Worksheet_12-ElectroChemistry -...

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Electrochemistry Question1 Balance each of the following skeletal equations by using oxidation and reduction half- reactions. All the reactions take place in acidic solution. Identify the oxidizing agent and reducing agent in each reaction. (a) Conversion of iron(II) into iron(III) by dichromate ion: Fe 2+ (aq)+Cr 2 O 7 2- (aq) Fe 3+ (aq) + Cr 3+ (aq) (b) Formation of acetic acid from ethanol by the action of permanganate ion: C 2 H 5 OH(aq) + MnO 4- (aq) Mn 2+ (aq) + CH 3 COOH(aq) (c) Reaction of iodide with nitric acid: I - (aq)+NO 3- (aq) I 2 (aq)+NO(g) (d) Reaction of arsenic (III) sulfide with nitric acid: As 2 S 3 (s)+NO 3- (aq) H 3 AsO 4 (aq)+S(s) +NO(g) Question2 Iron(II) hydrogen phosphate, FeHPO 3 , is oxidized by hypochlorite ions in basic solution. The products are chloride ion, phosphate ion, and iron(III) hydroxide. Write the balanced equation for each half-reaction and the overall equation for the reaction. Question3
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shanyang_111709_173544Worksheet_12-ElectroChemistry -...

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