1.00 mL of a 250.0 µM solution of KCl is diluted to 50.0 mL. What is concentration of this solution?

5.00 µM

Explanation:

Given data

Initial concentration (C₁) : 250.0 µM Initial volume (V₁) : 1.00 mL Final concentration (C₂) : ? Final volume (V₂) : 50.0 mL

We can find the final concentration using the dilution rule.

C₁ * V₁ = C₂ * V₂

C₂ = C₁ * V₁ / V₂

C₂ = 250.0 µM * 1.00 mL / 50.0 mL

C₂ = 5.00 µM

The concentration of the diluted solution is 5.00 µM.