Question

A chemist makes 820. mL of magnesium fluoride (MgF2) working solution by adding distilled water to 130. ml. of a 2.02 mm stock solution of magnesium fluoride in water. Calculate the concentration of the chemist's working solution. Round your answer to 3 significant digits. MM х ?

Answer 1

solution 2:02 mm 130 me. ll Initial concentration of Stock solution (MI) Initial volume of stock solution (vi) Final volume of solution after Dilution 820 ml = Applying Dilution formula, M, vi - m2 V₂ (2.02.)mm x 130 me M2 = concentration of solution after Dilution = M2 X 820 me. M2 = 202 X 130 mm 820 = 0.320 mm Hence concentration of Chemist's working solution is 0.320 mm