Suppose a powerful battery is connected between a pair of inert graphite electro

Question

Suppose a powerful battery is connected between a pair of inert graphite electrodes dipped into a pot of molten magnesium chloride (MgCI2 (see sketch at right) The battery makes a current of electrons flow in the directions shown by the arrows in the sketch. Note: Group 1A and Group 2A metals all melt at temperatures lower than their salts. en Which electrode is the anode? Write a balanced equation for the half-reaction that takesD place at electrode A. Write a balanced equation for the overall reaction

Explanation / Answer

Electrode B is anode due to following reasons:

oxidation occurs at anode

Mg2+   +2e-   --- > Mg

Anode reaction:

2 Cl-   ---- > Cl2 + 2e-

Overall reaction;

MgCl2(l)           Mg(s) +   Cl2(g)

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.