Dilution Calculator (C1V1 = C2V2)
What is a dilution calculator?
Dilution Calculator is a useful chemistry tool that lets us easily calculate the final concentration or required volume of a solution when we mix a concentrated solution with water (or solvent).
In simple words – dilution means diluting the solution, i.e. reducing its concentration by adding solvent (usually water) to it.
Basic Formula of Dilution:
The formula for dilution is:
C1V1=C2V2
Here,
- C1 = Initial (original) concentration
- V1 = Volume of concentrated solution used
- C2 = Final (diluted) concentration
- V2 = Final total volume after dilution
Example:
If you have 2 ml of nickel solution and you need to make 500 ml of 0.5 ml solution, then use the formula—
\[
C_1 V_1 = C_2 V_2
\]
\[
2 \times V_1 = 0.5 \times 500
\]
\[
V_1 = \frac{250}{2} = 125 \, \text{mL}
\]
Meaning:
Take 125 ml of concentrated solution and add water to bring the total volume to 500 ml.
How to use the dilution calculator?
- Enter initial concentration (C₁)
- Enter final concentration (C₂)
- Enter final volume (V₂)
- Calculator will automatically calculate the required volume of stock solution (V₁).
Or, if you need to calculate C₂, the calculator will do that too.
Real Life Applications:
- To prepare acid-base solutions in the lab.
- To adjust medicine concentrations in pharmacy.
- Environmental testing (such as salt or pollutant dilution)
- For school and college experiments
FAQs
Q1. What is dilution?
Dilution means reducing the concentration of a solution by adding more solvent (usually water).
Q2. When do we use the C₁V₁ = C₂V₂ formula?
We use this formula when the amount of solute stays the same but the solvent increases.
Q3. Can the dilution calculator be used for both acids and bases?
Yes, it can be used for acids, bases, or any type of solution.
Q4. What if the units are different (L and mL)?
Always keep all units the same — either in liters (L) or milliliters (mL).