Increasing The Dissolving Rate Of A Substance

Dissolving rate of a substance refers to the rate at which the substance (solute) dissolves in another substance (solvent). To speed up the dissolving process, you can do the following things-

  • Stirring- Stirring helps solute to come in contact with fresh solvent. The rate of dissolving increases because of that. If the solute is sitting at one place, it only comes in contact with the solvent in its immediate surrounding. The surrounding solvent becomes saturated after a certain point of time and the dissolving rate slows down. If you stir it, you mix everything up and the dissolving rate increases.
  • Heating The Mixture- It is another effective way of moving up the dissolving rate of a substance. What heating does is that it makes the molecules of both the solvent and the solute move faster. The faster the molecules move, the faster they dissolve. The increased kinetic energy results in more force, which in turn results in faster dissolution. Also, the increase in molecular motion opposes the attractive force of the molecules and they come apart easier.
  • Grind The Solute- Grinding the solute can also help in making it dissolve faster in the solvent. Grinding breaks up the solute into smaller pieces, which are easier to dissolve. Effectively, what it does is that it increases the surface area of the solute for the solvent to act upon. The resistive power of smaller particles is lesser than the resistive power of larger particles and hence, they dissolve more quickly. Say for example, normal sugar dissolves in water more quickly than sugar cubes of the same volume because sugar cubes are larger in comparison.

These are the ways in which the rate of dissolving can be increased for a substance. To know more about related topics, you can download the Byju’s Learning App and fall in love with learning.

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