Question

What is the overall equation for this chemical reaction?

Answer 1

Answer:

Mg(s) + 2H⁺ → Mg²⁺(aq) + H₂.

Explanation:

• To obtain the overall reaction, we sum the two half-reactions and omit the similar species in the reactants and products sides.

• We have two reactions:

oxidation reaction:

Mg(s) → Mg²⁺(aq) + 2e.

Reduction reaction:

2H⁺ + 2e → H₂.

• So, we add the two half-reactios and obtain the overall reaction:

Mg(s) + 2H⁺ → Mg²⁺(aq) + H₂.