Question

A 10 mL sample of concentrated NaCl (10.80 M) is diluted to a final volume of 650 mL. What is the molarity of the final solution

Answer 1

0.166 M

Step-by-step explanation:

Initial volume V1 = 10 ml

Initial concentration C1 = 10.80 M

Final volume V2 = 650 ml

Final concentration C2 = ?

The parameters are related by the following equation;

C1V1 = C2V2

Making C2 subject of formula, we have;

C2 = C1V1 / V2

Inserting the values

C2 = 10.80 * 10 / 650

C2 = 108.1 / 650 = 0.166 M