Question

Calculate the volume of 1.0 x 10-4 M CV solution that needs to be added to a 25.0 mL volumetric flask and diluted with deionized (DI) water in order to prepare a calibration standard solution with a concentration of 1.0 x 10-5 M CV . As part of your preparation for performing this experiment, repeat this calculation for each of the calibration standards you will need to prepare in Part I A of the experiment and record the information in your lab notebook so that you have it ready during the lab session. Also calculate the volume of 1.0 x 10-4 M CV solution required to prepare 10 mL of 3.0 x 10-5 M CV solution to be used in Part II B of the experiment and record the information in your lab notebook.

Answer 1

2.5 mL of 1.0 x 10⁻⁴ M solution needs to be added

Step-by-step explanation:

M₁ (Molarity after dilution) = 1.0 x 10⁻⁵ M

V₁ (volume after dilution) = 25.0 mL

M₂ (molarity before dilution) = 1.0 x 10⁻⁴ M

dilution equation is written as M₁V₁ = M₂V₂

Making V₂ the subject of formula

V₂ = M₁V₁ / M₂

Substitute the parameters in the equation,

V₂ = 1.0 x 10⁻⁵ x 25.0 / 1.0 x 10⁻⁴

= 2.5 mL

Volume of the solution before dilution is 2.5 mL

Repeat same step for the next