Teor álcool após diluição
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
This calculator determines alcohol content after adding a solvent (like water). It uses the formula C·V₁/(V₁+V₂), where C is the initial concentration, V₁ is the alcohol volume, and V₂ is the diluent volume. Useful for adjusting concentrations in labs, cocktail recipes, or chemical mixtures.
The formula works by conserving the total amount of alcohol before and after dilution. For example, 50 mL of 96% alcohol diluted with 150 mL water gives 200 mL at 24%. Ensure all units (e.g., mL or L) are consistent to avoid errors.
Apply this tool when you need to dilute alcohol solutions to a specific concentration. Common precautions include checking temperature effects on volume and using distilled water in experiments. For precise results, measure volumes with calibrated equipment.
Adding other liquids (like flavorings) will skew results, as the calculation assumes only pure alcohol and diluent. For strict analysis, verify volumes with volumetric flasks or pipettes.
Frequently asked questions
How does the alcohol dilution formula work?
The formula keeps the total alcohol amount divided by the new total volume. For example, 100 mL of 40% alcohol diluted with 100 mL water retains 40 mL alcohol but becomes 200 mL total, yielding 20%.
When should I use this calculator?
It’s applied in labs, alcohol beverage production, or chemical mixtures to adjust alcohol concentrations accurately.
Do I need specific units?
Yes, all volumes must be in the same unit (e.g., mL or L) to ensure accurate calculations.
How to handle different temperatures?
Liquids at different temperatures may alter volumes. Use adjusted values at 25°C or apply thermal expansion tables.