Answer to Question #201291 in Chemistry for nmnmn

Question

A chemist must dilute 57.6 ml of 1.41 M aqueous barium acetate (Ba(C,H,02), solution until the concentration falls to 1.00 M. He'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in mililiters. Be sure your answer has the correct number of significant digit mL

Answer 1

Solution:

The equation for dilution calculations can be used.

where:

c₁, V₁ - the molarity and volume of the concentrated solution

c₂, V₂ - the molarity and volume of the diluted solution

Thus:

(1.41 M) × (57.6 mL) = (1.00 M) × V₂

V₂ = (1.41 M × 57.6 mL) / (1.00 M) = 81.216 mL = 81.2 mL

V₂ = 81.2 mL

 

Answer: The final volume is 81.2 mL.