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Calculate the equilibrium constant for t...

Calculate the equilibrium constant for the reaction.
`2Fe^(3+)+3I^-harr2Fe^2+I_3^-`
The standary reduction potentials in acidic conditions are 0.77V and 0.54V respectively for `Fe^(3+)//Fe^(2+)` and `I_3^-//I^-` couples.

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