Answer to Question #319981 in General Chemistry for Ivan Ackerman

Question

An aqueous potassium iodate stock solution is made by dissolving 6.33 mol KIO in sufficient water for the final volume of the solution to be 4.80 L.

Calculate the molarity of the stock KIO3 solution.

A 10.0 mL aliquot is removed from the described stock solution and diluted to a total volume of 100.0 mL. Calculate the molarity of the dilute solution.

Answer 1

1. Molarity of stock = Mole/Volume

= 6.33/4.8 = 1.32M

2. Using priciple of dilution = C₁V₁ = C₂V₂

1.32  × 10 = C₂ × 100

C₂ = 10 / 1.32

= 7.58M