試題詳解

62. There is a titration of 50.00 mL of 0.0500 M Fe²⁺ with 0.1000 M Ce⁴⁺ in a medium (1.0 M H₂SO₄). Calculate the potential after the addition of 25.00 mL of Ce⁴⁺.
Ce⁴⁺ + e- → Ce³⁺      E^o = 1.44 V (1 M H₂SO₄)
Fe³⁺ + e- → Fe²⁺       E^o = 0.68 V (1 M H₂SO₄)
(A) 0.64 V
(B) 1.06 V
(C) 1.56 V
(D) 2.01 V
(E) 2.21 V