Question

tu and Noke are working with a red food coloring, Red #40. The stock solution has a concentration of 0.0880 M dye. Noke want to makes a concentration of 0.0088 M, exactly one tenth of the original red dye solution strength. What volume of the original 0.0880 M solution should she measure into a 100.0 volumetric flask, to be diluted with water up to the line of the flask?

Answer 1

The volume of the original solution is 10.00 mL.

Step-by-step explanation:

We have a concentrated solution of C₁ = 0.0880 M and we want to prepare 100.0 mL (V₂) of a dilute one of C₂ = 0.0088 M. To calculate the volume of solution 1 (V₁) to be diluted we use the dilution rule.

C₁.V₁=C₂.V₂

`V_(1)=(C_(2).V_(2))/(C_(1)) =(0.0088M * 100.0mL )/(0.0880M) =10.00mL`