# 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?

Apr 5, 2017

0.3 M HCl

#### Explanation:

There are two ways to do this:
1. Using the dilution formula $C 1 V 1 = C 2 V 2$,
where C1 = 0.6 M, V1 = 20 mL, V2 = 40 mL and C2 = ?

$C 2 = \frac{0.6 \cdot 20}{40} = 0.3 M$

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