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1)From standard reduction potentials, calculate the equilibrium constant at 25oC for the reaction:

2 MnO4-(aq) + 10 Cl-(aq) + 16H+(aq) 2 Mn2+ (aq) + 5 Cl2 (g) + 8 H2O (l)

2) Iron is extracted from its ore using carbon. This can be represented using the following equation. Calculate the percent atom economy for pure iron.

2 Fe2O3 (s) + 3 C (s) 4 Fe (s) + CO2 (g)

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