Question

A 20-milliliter sample of 0.60 M HCI is diluted with water to a volume of 40 milliliters. What is the new concentration of the solution?

Answer 1

0.3 M HCl

Explanation:

There are two ways to do this:
1. Using the dilution formula `C1V1 = C2V2`,
where `C1 = 0.6 M, V1 = 20 mL, V2 = 40 mL and C2 = ?`

`C2 = (0.6 * 20)/40 = 0.3 M`

1. The solution is diluted to make double the amount, therefore, the concentration will be halved.