Balancing Redox Reactions

Question

Complete and balance the following half-reaction in basic solution. Be sure to include the proper phases for all species within the reaction.

Zn(s) --> Zn(OH)4 2-(aq)

Answer 1

Zn(s) ==> Zn(OH)₄^2-(aq) ... unbalanced

Zn(s) + 4OH^-(aq) ==> Zn(OH)₄^2-(aq) ... balanced for Zn, O and H = balanced equation