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Find the equilibrium constant at 25^@C f...

Find the equilibrium constant at `25^@C` for the reaction,
`Hg_2(NO_3)_2+2Fe(NO_3)_2=2Hg+2Fe(NO_3)_3`
`E_(Hg_2^(2+),Hg)^@=0.79`volt, `E_(Fe^(3+),Fe^(2+))^@=0.77` volt

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