Question

20. What volume of 0.350M KMnO4 solution must be diluted to prepare 600. mL of

0.150M KMnO4 solution?​

Answer 1

25.7 mL

Step-by-step explanation:

Step 1: Given data

• Initial volume (V₁): ?

• Initial concentration (C₁): 0.350 M

• Final volume (V₂): 600 mL

• Final concentration (C₂): 0.150 M

Step 2: Calculate the volume of the initial solution

We have a concentrated solution and we want to prepare a diluted one. We can calculate the initial volume using the dilution rule.

C₁ × V₁ = C₂ × V₂

V₁ = C₂ × V₂ / C₁

V₁ = 0.150 M × 600 mL / 0.350 M

V₁ = 25.7 mL