Dilution Calculator

Calculate dilutions using the formula C₁×V₁ = C₂×V₂. Enter three values and the fourth is calculated automatically.

Formula

C₁ × V₁ = C₂ × V₂

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mol/L
mL
mol/L
mL

The dilution calculator is based on the dilution law C₁ × V₁ = C₂ × V₂, which describes how the concentration of a solution changes when diluted with solvent. This law applies to ideal solutions and is a fundamental relationship in analytical chemistry.

C₁ represents the initial concentration, V₁ the initial volume, C₂ the final concentration, and V₂ the final volume. When three of these four values are known, the fourth can be calculated.

In laboratory practice, the dilution calculator is frequently used to dilute stock solutions to the desired working concentration. This is particularly important when preparing standard solutions, buffers, and reagents for analytical methods.

Frequently Asked Questions

What is the dilution formula C₁V₁ = C₂V₂?
The dilution formula describes the relationship between concentration and volume before and after a dilution. C₁ is the initial concentration, V₁ the initial volume, C₂ the final concentration, and V₂ the final volume. The product of concentration and volume remains constant during dilution.
When should I use the dilution calculator?
The dilution calculator is used whenever you want to dilute a concentrated stock solution to a lower working concentration. Typical applications include preparing standard solutions, preparing reagents, and diluting acids or bases in the laboratory.
Does the dilution formula apply to all solutions?
The formula C₁V₁ = C₂V₂ strictly applies only to ideal, dilute solutions. Deviations may occur with very concentrated solutions, electrolyte solutions, or mixtures with volume contraction. However, for most laboratory applications, the formula provides sufficiently accurate results.

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