Question

A chemist prepares a solution of potassium permanganate KMnO4 by measuring out 19.μmol of potassium permanganate into a 300.mL volumetric flask and filling the flask to the mark with water.

Calculate the concentration in /μmolL of the chemist's potassium permanganate solution. Round your answer to 2 significant digits.

Answer 1

Step-by-step explanation:

To find the concentration of the solution, we need to divide the number of moles of solute by the volume of the solution in liters.

Number of moles of KMnO4 = 19.μmol = 0.019 mmol

Volume of solution = 300 mL = 0.3 L

Concentration of KMnO4 solution = Number of moles of solute / Volume of solution

= 0.019 mmol / 0.3 L = 0.063 μmol/L

Therefore, the concentration of the potassium permanganate solution is 0.063 μmol/L.