Calculadora de Diluição de Cloro
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
V₁ = (C₂ × V₂) / C₁
About this calculator
The Chlorine Dilution Calculator uses the dilution law C₁V₁ = C₂V₂ to determine the volume of a concentrated chlorine solution needed to prepare a diluted solution with desired concentration and volume. This tool is essential for professionals and students working with chlorine solutions, such as in cleaning, water disinfection, or laboratories. The formula V₁ = (C₂ × V₂) / C₁ calculates the initial volume (V₁) from the initial concentration (C₁), final concentration (C₂), and final volume (V₂).
You can use this calculator in various practical situations, such as diluting bleach (sodium hypochlorite) to disinfect surfaces or treat drinking water. For example, if you have a 10% chlorine solution and need 1 liter of a 1% solution, the calculator tells you to use 100 ml of the concentrated solution and add water to make 1 liter. This avoids waste and ensures the correct concentration for effectiveness and safety.
Important precautions: always add chlorine to water, never the reverse, to avoid dangerous splashes. Use protective equipment like gloves and goggles. The calculator assumes concentrations are in the same unit (e.g., % or g/L). Ensure the initial concentration is greater than the final, otherwise dilution is not possible. The formula does not account for chemical reactions or volatilization losses, being ideal for stable solutions at room temperature.
Frequently asked questions
Can I use this calculator to dilute powdered chlorine?
Yes, as long as you know the concentration of the powdered chlorine (e.g., % active chlorine) and convert to the same unit as the desired concentration.
What if the initial concentration is lower than the final?
It is not possible to dilute to a higher concentration. You would need to evaporate water or use a more concentrated solution.
How to accurately measure the volume of concentrated chlorine?
Use a graduated cylinder or syringe for small volumes. For larger volumes, a volumetric flask is recommended for precision.
Does the calculator work for any concentration unit?
Yes, as long as C₁ and C₂ are in the same unit (%, g/L, mol/L, etc.). The result V₁ will be in the same unit as V₂.
What is the difference between diluting chlorine and neutralizing chlorine?
Diluting reduces concentration by adding water. Neutralizing uses chemical agents to eliminate active chlorine, such as sodium thiosulfate.