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$If E_{{Fe}^{+ 2} / Fe}^{0} = x_{1} V; E_{{Fe}^{+ 3} / {Fe}^{+ 2}}^{0} = x_{2} V, E_{{Fe}^{+ 3} / Fe}^{0} is$

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Correct option is B

Fe+2+2e−→Fe; E10=x1 and ∆G10=-2FE10=-2Fx1 Fe+3+e−→Fe+2; E20=x2 and ∆G20= -1FE20= -1Fx2 Fe+3+3e−→Fe; E30=?; ∆G30=-3FE30=∆G10+∆G20 -3FE30=-F(2x1+x2) E30=2x1+x23

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If EFe+2/Fe0=x1V ; EFe+3/Fe+20=x2V, EFe+3/Fe0 is

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$If E_{{Fe}^{+ 2} / Fe}^{0} = x_{1} V; E_{{Fe}^{+ 3} / {Fe}^{+ 2}}^{0} = x_{2} V, E_{{Fe}^{+ 3} / Fe}^{0} is$