Question

How many mL of 2M stock solution would I use to prepare 0.500 L of 0.1 M NaCl?

Answer 1

25 mL

Step-by-step explanation:

Step 1: Given data

• Concentration of the concentrated solution (C₁): 2 M

• Volume of the concentrated solution (V₁): ?

• Concentration of the diluted solution (C₂): 0.1 M

• Volume of the diluted solution (V₂): 0.500 L

Step 2: Calculate the volume of the concentrated NaCl solution

We will use the dilution rule.

C₁ × V₁ = C₂ × V₂

V₁ = C₂ × V₂ / C₁

V₁ = 0.1 M × 0.500 L / 2 M

V₁ = 0.025 L = 25 mL