contestada

given the standard electrode reduction potentials, which reaction will occur spontaneously? standard reduction potentials e° (v) cu²⁺(aq) e⁻ → cu⁺(aq) 0.15 v²⁺(aq) 2e⁻ → v(s) -1.18 mg²⁺(aq) 2e⁻ → mg(s) -2.37 a) v²⁺ 2cu⁺ → v 2cu²⁺ b) mg²⁺ v → v²⁺ mg c) mg²⁺ 2cu⁺ → 2cu²⁺ mg d) mg²⁺ v²⁺→ mg v e) v 2cu²⁺ → v²⁺ 2cu⁺

Respuesta :

The standard electrode reduction potentials, the reaction will occur spontaneously :

V + 2Cu²⁺    ------>   V²⁺   +   2Cu⁺

The reduction is the half reaction in which the electrons are  associated with the atoms are changed this means that oxidation state decreases. the reaction is given as :

V + 2Cu²⁺    ------>   V²⁺   +   2Cu⁺

In this the V with the reduction potential of -1.18 is oxidizes as the oxidation number of the V is increases from 0 to +2. Cu with the reduction potential of +0.15  is reduced as the oxidation number of the Cu is decreases from +2 to 0.

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