May I please get help on this as well.

Question

Write two half‑reactions to describe each of these metal displacement reactions. Include phase symbols.

Mg(s)+CoBr2(aq)⟶MgBr2(aq)+Co(s)

oxidation half‑reaction:

reduction half reaction:

Cu(s)+2AuCl(aq)⟶CuCl2(aq)+2Au(s)

oxidation half-reaction:

reduction half-reaction:

Answer 1

Mg(s) + CoBr₂(aq) ⟶ MgBr₂(aq) + Co(s)

Mg(s) ==> Mg²⁺(aq) ... oxidation half reaction

Mg(s) ==> Mg²⁺(aq) + 2e- ... balanced for mass and charge

Co²⁺(aq) ==> Co(s) ... reduction half reaction

Co²⁺(aq) + 2e- ==> Co(s) .. balanced for mass and charge

Cu(s) + 2AuCl(aq)⟶ CuCl2(aq) + 2Au(s)

Cu(s) ==> Cu²⁺(aq) ... oxidation half reaction

Cu(s) ==> Cu²⁺(aq) + 2e- ... balanced for mass and charge

2Au⁺(aq) ==> 2Au(s) ... reduction half reaction

2Au⁺(aq) + 2e- ==> 2Au(s) ... balanced for mass and charge