Question

What will be normality of 1 M KMnO4 solution ? [Guj. Board-2007)
(a) 0.1 N
(b) 2N
(c) 100N
(d) 5 N
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Answer 1

4Mn2++16F−→4MnF4−+4e−→ change  of 4e−

Molarity of KMnO4=0.025m

Normality = Molarity× n-factor

=0.025×4

=0.1N