你可能感興趣的試題

A.0.50V、0.41V、0.32V
B.0.17V、0.32V、0.56V
C.0.23V、0.41V、0.50V
D.0.23V、0.32V、0.50V

A.[Ce⁴⁺]=[Fe²⁺]=1.8×10^-8mol/L，[Ce³⁺]=[Fe³⁺]≈0.050mol/L
B.[Ce⁴⁺]=[Fe³⁺]≈0.050mol/L，[Ce³⁺]=[Fe2+]=2.0×10^-8mol/L
C.[Ce⁴⁺]=[Fe²⁺]=0.047mol/L，[Ce³⁺]=[Fe³⁺]=0.003mol/L
D.[Ce⁴⁺]=[Fe³⁺]=0.047mol/L，[Ce³⁺]=[Fe²⁺]=0.003mol/L