Question

A student has 100. mL of 0.400 M M CuSO4(aq) and is asked to make 100. mL of 0.150 M CuSO4(aq) for a spectrophotometry experiment. The following laboratory equipment is available for preparing the solution: centigram balance, weighing paper, funnel, 10 mL beaker, 150 mL beaker, 50 mL graduated cylinder, 100 mL volumetric flask, 50 mL buret, and distilled water.

Calculate the volume of 0.400 M CuSO4(aq) required for the preparation

Answer 1

37.5 mL

Step-by-step explanation:

To solve this problem we can use the formula:

• C₁V₁ = C₂V₂

C₁ = 0.400 M

V₁ = ?

C₂ = 0.150 M

V₂ = 100 mL

So now we solve for V₁:

• 0.400 M * V₁ = 0.150 M * 100 mL

• V₁ = 37.5 mL

So we need 37.5 mL of 0.400 M CuSO₄(aq) to make 100 mL of 0.150 M CuSO₄(aq). That volume could be measured in the 50 mL buret.