What would be the oxidation and reduction half reactions for this equation?

Chemistry

1 answer:

Sedbober [7]3 years ago

5 0

Answer:

Fe(s) → Fe²⁺(aq) + 2e⁻ OXIDATION

Mg²⁺(aq) + 2e⁻ → Mg(s) REDUCTION

Explanation:

The redox reaction is: MgCl₂(aq) + Fe(s) → FeCl₂(aq) + Mg(s)

We need to know that elements in ground state have 0 as the oxidation state.

Iron in the reactants, and Mg in the products

In the magnessium chloride, the Mg acts with+2, so the oxidation state has decreased → REDUCTION

In the iron(II) chloride, the Fe acts with +2, so the oxidation statehas increased → OXIDATION

The half reactions are:

Fe(s) → Fe²⁺(aq) + 2e⁻ OXIDATION

Mg²⁺(aq) + 2e⁻ → Mg(s) REDUCTION

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In this case, since the mole-mass-particles relationships are studied by considering the Avogadro's number for the formula units and the molar mass for the mass of one mole of substance, we proceed as shown below:

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