Oxidising and reducing
1. Vitamin C can be analysed using a solution of iodine in the presence of starch by redox titration. Identify the oxidising agent in the redox reaction: C&H:06 + 12 - C6H6O6 + 2H+ + 21- 2. The ion electron equations for the following redox process are: NO3 (aq) + 4H*(aq) + 3e- NO(g) + 2H20 (1) Zn(s) → Zn2+ (aq) + 2e a. Clearly identify which one of these is the reduction equation b. Combine these two equations to give the overall redox equation 3. Balance the following half equation: PbO2 Pb2
Oxidising and reducing
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