8 The redox indicator equilibrium can be represented by the equation below: In OX + n e = In RED E o = x V E = E In o – (0.0592/n In ) log [In RED ]/[In OX ] The color of the oxidized form can be clearly distinguished when 10 [In RED ] = [In OX ] and the color of the reduced form can be clearly distinguished when [In RED ] = 10 [In OX ].
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