Question

There is a bottle of KCl solution: the volume is 35 mL; its molarity is 3.0 M.

After diluting it into final volume 200 mL, what is the molarity (in M) now?

Answer 1

0.525 M

Step-by-step explanation:

As the problem deals with a dilution process, we can use the following formula:

• C₁V₁=C₂V₂

Where subscript 1 stands for initial concentration and volume, while 2 stands for the final conditions. Meaning that in this case:

• C₁ = 3.0 M

• V₁ = 35 mL

• C₂ = ?

• V₂ = 200 mL

We input the data given by the problem:

• 3.0 M * 35 mL = C₂ * 200 mL

And solve for C₂:

• C₂ = 0.525 M