Question

2.0 mL of a 0.75 M solution of potassium permanganate , KMnO4 solution is used to make a 500 mL solution . What is the concentration of the new solution ?

Answer 1

The concentration of the new solution is 0.003 M.

How do we calculate the required concentration?

Required concentration of the final solution will be calculated by using the below equation as:

M₁V₁ = M₂V₂, where

M₁ & V₁ are the molarity and volume of initial solution.

M₂ & V₂ are the molarity and volume of final solution.

On putting values from the question, we get

M₂ = (0.75)(2) / (500) = 0.003 M

Hence required concentration is 0.003M.

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