Consider the following reaction: 2 Fe + 3 Mg²⁺ → 2 Fe³⁺ + 3 Mg
The half-reaction for the reduction in this reaction is
A)Fe → Fe³⁺ + 3 e⁻
B)Fe³⁺ + 3 e⁻ → Fe
C)Mg → Mg²⁺ + 2 e⁻
D)Mg²⁺ + 2 e⁻ → Mg

Question

Quizplus · Accepted Answer

The reduction half-reaction involves the gain of electrons. In this reaction, Mg²⁺ gains electrons to form Mg, which is represented by the half-reaction D: Mg²⁺ + 2 e⁻ → Mg.

Consider the Following Reaction: 2 Fe + 3 Mg²⁺ →