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Module 1: Reacciones redox

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Enfoque alternativo

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Chemistry - Alternative approach

Alternative approach

An alternative approach to developing reduction half-equations is to leave
the assigning of electrons till the last step. In this case the four steps
in establishing the balanced half-equation for the reduction of MnO4(aq) to
Mn(aq) in acid solution would be:

This latter approach is particularly useful for reactions involving
organic molecules - where it is difficult to assign oxidation numbers.

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