What is the concentration of a 1:10 dilution of a 2.5 M solution of NaCl? How would you prepare exactly 100 ml of such a solution?

The concentration of the solution is 0.25 M

Explanation:

Let the volume of solution of 2.5 M NaCl be 10 mL

We are given:

Dilution ratio = 1 : 10

So, the solution prepared will have a volume of =

To calculate the molarity of the diluted solution, we use the equation:

where,

are the molarity and volume of the concentrated NaCl solution

are the molarity and volume of diluted NaCl solution

We are given:

Putting values in above equation, we get:

Hence, the concentration of the solution is 0.25 M