A solution of KMnO4 is reduced to MnO2. The normality of solution is 0.6. The molarity is
Question
A solution of KMnO4 is reduced to MnO2. The normality of solution is 0.6. The molarity is
Solution
To find the molarity of the solution, we first need to understand the relationship between normality and molarity. Normality (N) is defined as the number of equivalent per liter of solution, while molarity (M) is defined as the number of moles per liter of solution.
The relationship between normality and molarity is given by the formula:
N = M * n
where n is the number of equivalents per mole of the substance.
In the case of KMnO4 being reduced to MnO2, the change in oxidation state of Mn is from +7 (in KMnO4) to +4 (in MnO2). So, the number of equivalents, n, is 3.
We can rearrange the formula to solve for molarity:
M = N / n
Substituting the given values:
M = 0.6 N / 3 = 0.2 M
So, the molarity of the solution is 0.2 M.
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