Hydrogen peroxide can act as either an oxidizing agent or a reducing agent, depe

Question

Hydrogen peroxide can act as either an oxidizing agent or a reducing agent, depending on the species present in solution. Write balanced half-reaction equations for each of the following. (a) H_2O_2(aq) acting as an oxidizing agent in an acidic solution. Write the balanced half-reaction equation Phases are optional (b) H_2O_2(aq) acting as a reducing agent m an acidic solution. Write the balanced half-reaction equation Phases are optional (c) A disproportion reaction is one in which a single species oxidizes and reduces itself Write the complete balanced equation for the disproportion reaction of H_2O_2(aq). Phases are optional.

Explanation / Answer

a)

H2O2 (aq) + 2 H+ (aq) + 2e- -------------> 2 H2O (l)

b)

2 H2O (l)   --------------> H2O2 (aq) + 2 H+ (aq) + 2e-

c)

H2O2 +   2 H2O ----------------->   2 O2 + 4 H+ + 2e-

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