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8. a. Calculate the standard electrode potential for the half reaction Cr3++e2Cr2+ at 25C. b. Calculate the emf at 25C of the cell PtCr3+(0.25m),Cr2+(0.05m)Mn2+(0.5.m)Mn (

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8. a. Calculate the standard electrode potential for the half reaction Cr3++e2Cr2+ at 25C. b. Calculate the emf at 25C of the cell PtCr3+(0.25m),Cr2+(0.05m)Mn2+(0.5.m)Mn ( 10 points) The standard electrode potentials are as following: Cr3++3eCrCr2++2eCrMn2++2eMnE0=0.740VE0=0.910VE0=1.180V

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