Identify each of the following half-reactions as either an oxidation half-reaction or a reduction half-reaction.

H2(g) → 2H+(aq) + 2e- oxidation

Cu2+(aq) → + 2e-Cu(s) reduction

Write a balanced equation for the overall redox reaction. Use smallest possible integer coefficients.

In a redox reaction, one half-reaction is the oxidation (where the atom loss electrons) whereas the other reaction is the reduction (Where the atom is gaining electrons.

In the reactions:

H₂(g) → 2H⁺(aq) + 2e⁻ oxidation

Here, the reaction is written as the oxidation because the hydrogen H₂ is in oxidation state 0 and H⁺ in +1. That means each atom is loosing one electron.

Cu²⁺(aq) + 2e⁻ → Cu(s) reduction

And here, the Cu²⁺ is in +2 oxidation state and after the reaction is in Cu(s) 0 state. Thus, each atom is gaining 2 electrons.

The sum of both reactions is:

H₂(g) + Cu²⁺(aq) + 2e⁻ → 2H⁺(aq) + 2e⁻ + Cu(s)

Subtracting the electrons in both sides of the reaction:

Identify each of the following half-reactions as either an oxidation half-reaction or a reduction half-reaction. H2(g) → 2H+(aq) + 2e- oxidation Cu2+(aq) → + 2e-Cu(s) reduction Write a balanced equation for the overall redox reaction. Use smallest possible integer coefficients.

Respuesta :

H₂(g) + Cu²⁺(aq) → 2H⁺(aq) + Cu(s)

Otras preguntas

Identify each of the following half-reactions as either an oxidation half-reaction or a reduction half-reaction.

H2(g) → 2H+(aq) + 2e- oxidation

Cu2+(aq) → + 2e-Cu(s) reduction

Write a balanced equation for the overall redox reaction. Use smallest possible integer coefficients.