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6. Solution eLearn.Punjab
Concentrated solution of KMnO4 has dense purple colour. Take 10 cm3 of this solution with the
help of a graduated pipette and put in a measuring flask of 100 cm3. Add water upto the mark
present at the neck of the flask. Now it is 0.01 molar solution of KMnO4.
Example 6.4.
10 cm3 of 0.01 molar KMnO4 solution has been diluted to 100 cm3. Find out the molarity of this
solution.
Solution:
Data
M1 = 0.01 M M2 = ?
V1 = 10 cm3 V2 = 100 cm3
Using following formula, volume required can be calculated
M1V1 = M2V2
M2 = M1 V1
V2
By putting these values we get molarity:
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