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Consider the following redox half equations Cr2O72- Cr3+ Fe2+ Fe3+ (a) Write the balanced half reactions in an acidic solution for BOTH redox couples listed above. Use ">" to indicate the arrow in your answer or you can copy the arrow from above. (6 marks) (b) Identify, clearly which half reaction represents an oxidation and which half equation represents a reduction (2 marks) (c) Is Fe2+ in the half equation in (b) acting as an oxidising or reducing agent? Explain. (2 marks)
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