Stirring increases the rate of dissolving of a solute in a solvent by increasing the surface area of contact between the solute and solvent. When you stir a solution, you are essentially breaking up the solute particles into smaller pieces, which exposes more of the solute to the solvent. This allows the solvent molecules to more easily interact with the solute molecules and dissolve them.

Heating also increases the rate of dissolving of a solute in a solvent. This is because heat increases the kinetic energy of the solvent molecules. The faster the solvent molecules move, the more likely they are to collide with the solute molecules and dissolve them.

In the case of salt dissolving in water, the salt molecules are attracted to the water molecules. When you stir the solution, you are essentially mixing the salt and water molecules together, which allows the salt molecules to more easily interact with the water molecules and dissolve. Heating the solution also increases the kinetic energy of the water molecules, which makes them more likely to collide with the salt molecules and dissolve them.

However, it is important to note that stirring and heating do not affect the solubility of a solute. The solubility of a solute is the maximum amount of solute that can dissolve in a solvent at a given temperature. Stirring and heating can only affect the rate at which a solute dissolves, not the amount that can dissolve.

Here are some other factors that can affect the rate of dissolving of a solute in a solvent:

• The size of the solute particles: Smaller solute particles have a greater surface area and dissolve more quickly than larger solute particles.
• The temperature of the solvent: Warmer solvents dissolve solutes more quickly than cooler solvents.
• The agitation of the solvent: Stirring or shaking the solvent can increase the rate of dissolving.
• The presence of other solutes: Some solutes can interfere with the dissolving of other solutes.

Dr Murtadha Shukur thank you for your contribution to the discussion

The rate of dissolving is influenced by stirring, temperature, and size of solute particles. Stirring helps distribute solute particles, speeding up the rate of dissolving. Warm solvents dissolve solutes faster due to increased particle movement. Smaller solute particles dissolve faster due to increased surface area. Stirring affects the rate of dissolving because it spreads the solvent's molecules around the solute and increases the chance of them coming into contact with it. Because of this, stirring makes solvents dissolve faster. Other factors affecting a solvent's solubility include temperature and particle size. The stirring allows fresh solvent molecules to continually be in contact with the solute. If it is not stirred, then the water right at the surface of the solute becomes saturated with dissolved sugar molecules, meaning that it is more difficult for additional solute to dissolve. If we stir a solution in an effort to dissolve a solute in a solvent, as was done in the five beakers, we can increase the rate of dissolution by increasing the interactions between solute and solvent particles. Since solubility is the upper limit, it cannot be increased by stirring the solution or by adding more solute. Stirring the solution will simply increase the rate of dissolution, but not the maximum amount of solute that can be dissolved. With an increase in temperature, more solute can be dissolved in the solvent.Agitation and stirring will increase the rate at which salt dissolves in water and increased movement of water molecules allow sodium ions and chloride ions to be pulled apart as shells of hydration are formed. Agitation and stirring will increase the rate at which salt dissolves in water and increased movement of water molecules allow sodium ions and chloride ions to be pulled apart as shells of hydration are formed. Stirring a solute into a solvent speeds up the rate of dissolving because it helps distribute the solute particles throughout the solvent. As the temperature increases, the number of grams of sugar that dissolves in water increases significantly. As the temperature increases, the number of grams of salt that dissolves in water increases only slightly. The process of stirring or agitating makes the solvent molecules is in contact with the solute particles on a continuous basis. So, if the mixture of salt and water will be stirred continuously, then the process of dissolution will take place frequently.