In an oxidation-reduction reaction, MnO ₄⁻ ion is converted to Mn ²⁺ . What is the number of equivalents of KMnO ₄ (mol. wt. =158 ) present in 250 mL of 0.04 M~ KMnO ₄ solution ?

Step-by-step solution

gathered Change in oxidation number =(+7)-(+2)=5 Normality of solution =5 0.04=0.20 ~N Volume =250 ~mL gathered Number of equivalents of KMnO ₄=0.20 250 1000 =0.05