Question

3.

Answer 1

Answer:

0.162 M

Explanation:

We are given;

• Initial concentration as 18.0 M
• Initial volume of the solution is 18.0 mL or 0.018 L
• Final volume of the solution is 2.0 L

We are required to find the final concentration or molarity.

• When a solution is diluted by adding more solvent, the concentration of the solution decreases.
• To find the final concentration of the dilute solution we use the dilution formula, C1V1 = C2V2.

Rearranging the formula;

C2 = C1V1 ÷ V2

     = (18 M × 0.018 L) ÷ 2.0 L

     = 0.162 M

Therefore, the final concentration will be 0.162 M