Respuesta :

danidg02

Answer:

2Cl+2e -->2Cl^-

Explanation:

reduction is the gain of electrons and this is the only option which fits the definition.

dsdrajlin

Answer:

2 Cl + 2 e⁻ → 2 Cl⁻

Explanation:

Which equation describes a reduction?

  • Mg(s) → Mg²⁺(aq) + 2 e⁻. NO. This is an oxidation because Mg loses electrons and its oxidation number increases from 0 to 2.
  • 2 Cl + 2 e⁻ → 2 Cl⁻. YES. This is a reduction because Cl gains electrons and its oxidation number decreases from 0 to 1-.
  • Na(s) → Na⁺(aq) + e⁻. NO. This is an oxidation because Na loses electrons and its oxidation number increases from 0 to 1.
  • Al(s) → Al³⁺(aq) + 3 e⁻. NO. This is an oxidation because Al loses electrons and its oxidation number increases from 0 to 3.

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