When does hydrogen peroxide act as a reducing agent?
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when any reducing agent is added to it
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Hydrogen peroxide has the ability to gain or lose electrons, as its oxygen atoms are in the -1 oxidation state. By gaining electrons they can go to the -2 oxidation state, and by losing electrons they can go to the zero oxidation state (the element)
When someting acts as an oxidising agent is gains electrons (removing them from the oxidised species). This can be shown by the relevant half-equations:
H2O2 + 2 e ➡ 2OH-
Or in presence of acid
H2O2 + 2 e + 2H+ ➡2 H2O
When someting acts as an oxidising agent is gains electrons (removing them from the oxidised species). This can be shown by the relevant half-equations:
H2O2 + 2 e ➡ 2OH-
Or in presence of acid
H2O2 + 2 e + 2H+ ➡2 H2O
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