Ok, so here's my question:

Question

If exactly 14.563 grams of KMnO4 were dissolved to yield 750 mL of solution waht would be the normality of the KMnO4? From a previous question (that this question says to refer to) we have:

MnO4- +8H+ +5e --> Mn2+ +4H2O

I'm not exactly sure what to do. I know that N=#eq/L but that's it...Any help would be lovely.

Answer 1

Well, I see 5 equivalents per molecule of KMnO4

Normality= 5*molarity

calculate molarity and you have it.

You have to be careful on potassium permanganate, in caculating equivalents, because the oxidation change for Mn is usually different in each reaction.

Answer 2

Ok, I see.