Dilution Chemistry Example 2

Follow the full solution, then compare it with the other examples linked below.

Example 2

medium

A stock solution of

\text{H}_2\text{SO}_4

12.0\,\text{M}

. What volume is needed to prepare

500\,\text{mL}

0.60\,\text{M}

solution?

Solution

1
$M_1V_1 = M_2V_2$ : $12.0 \times V_1 = 0.60 \times 500$ .
2
$V_1 = \frac{300}{12.0} = 25.0\,\text{mL}$ .
3
Measure $25.0\,\text{mL}$ of stock solution and dilute to $500\,\text{mL}$ .

Answer

25.0\,\text{mL of stock solution}

Always add acid to water (never water to acid) when preparing dilute acid solutions. This prevents dangerous splattering from the exothermic mixing process.

About Dilution

The process of decreasing the concentration of a solution by adding more solvent while keeping the total amount of solute constant.

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More Dilution Examples

Example 1 easy

How much water must be added to [formula] of [formula] to make a [formula] solution?

Example 3 easy

You dilute [formula] of [formula] to a final volume of [formula]. What is the new concentration?

Example 4 easy

How much [formula] hydrochloric acid is needed to prepare [formula] mL of [formula] HCl?

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Related Concepts

Concentration Titration