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:

H2O2(aq) acting as an oxidizing agent in an acidic solution. Write the balanced half-reaction equation.

H2O2(aq) acting as a reducing agent in an acidic solution. Write the balanced half-reaction equation

A disproportionation reaction is one in which a single species oxidizes and reduces itself. Write the complete balanced equation for the disproportionation reaction of H2O2(aq)

Explanation / Answer

1)

H2O2 ? H2O (reduction)

Balancing the oxygen atoms by adding another H2O molecule to the right

side yields

H2O2 ? 2 H2O

and balancing the hydrogen atoms by adding 2 H+ ions to the left side yields

2 (H+) + H2O2 ? 2 H2O

We now balance the charge by adding 2(e

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