Tempo Dissolução (aprox)
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The Dissolution Time Calculator is an online tool that helps estimate the time required to dissolve a substance in a solvent. It is based on the dissolution rate equation: rate = k·A·(Cs−C), where k is the dissolution constant, A is the surface area of the substance, Cs is the saturation concentration, and C is the current concentration. With this equation, it is possible to understand how factors such as surface area and concentration affect the dissolution process.
The formula behind the calculator is relatively simple: it considers the dissolution rate as a function of the dissolution constant, the surface area of the substance, and the difference between the saturation concentration and the current concentration. However, it is essential to note that the dissolution constant k can vary depending on experimental conditions, such as temperature and solvent properties. Therefore, the results obtained with the calculator should be considered approximate.
The Dissolution Time Calculator is useful in various situations, such as in the development of industrial dissolution processes, in the optimization of chemical reaction conditions, and in understanding natural phenomena that involve dissolution, such as the dissolution of minerals in water. However, it is crucial to be careful with units and boundary conditions, as they can significantly affect the results.
It is essential to remember that dissolution is a complex process that can involve many factors, including interactions between solvent and dissolved substance molecules. Therefore, the results obtained with the calculator should be interpreted with care and, if possible, experimentally validated.
Frequently asked questions
What is the dissolution constant k?
The dissolution constant k is a parameter that depends on experimental conditions, such as temperature and solvent properties. It is a measure of the rate at which the substance dissolves in the solvent.
How does surface area affect dissolution time?
The surface area of the substance directly affects the dissolution time. The larger the surface area, the faster the dissolution process will be.
What units are used in the calculator?
The units used in the calculator depend on the input variables. Generally, units of concentration (such as mol/L), surface area (such as cm²), and time (such as seconds or minutes) are used.
Can the calculator be used for any type of substance?
The calculator is a general tool that can be used for many substances, but it is essential to remember that the dissolution constant k can vary depending on the substance and experimental conditions.