Dilution Examples in Chemistry
Start with the recap, study the fully worked examples, then use the practice problems to check your understanding of Dilution.
This page combines explanation, solved examples, and follow-up practice so you can move from recognition to confident problem-solving in Chemistry.
Concept Recap
The process of decreasing the concentration of a solution by adding more solvent while keeping the total amount of solute constant.
Watering down a drink—same amount of flavor, more liquid, weaker taste.
Read the full concept explanation →How to Use These Examples
- Read the first worked example with the solution open so the structure is clear.
- Try the practice problems before revealing each solution.
- Use the related concepts and background knowledge badges if you feel stuck.
What to Focus On
Core idea: The moles of solute remain constant during dilution — only the volume and concentration change.
Common stuck point: Always add acid to water when diluting, never water to acid — the heat released can cause dangerous splashing.
Sense of Study hint: When solving dilution problems, apply M_1V_1 = M_2V_2 directly. First identify the known quantities — the initial concentration M_1, initial volume V_1, and either the final concentration M_2 or final volume V_2. Then solve for the unknown by rearranging the equation. Finally, check that your answer makes sense: diluting always decreases concentration and increases volume.
Worked Examples
Example 1
easySolution
- 1 Use M_1V_1 = M_2V_2: 6.0 \times 100 = 1.0 \times V_2.
- 2 V_2 = 600\,\text{mL}.
- 3 Water to add = 600 - 100 = 500\,\text{mL}.
Answer
Example 2
mediumPractice Problems
Try these problems on your own first, then open the solution to compare your method.
Example 1
easyExample 2
easyRelated Concepts
Background Knowledge
These ideas may be useful before you work through the harder examples.