what are the factors that determine the rate at which a soulute dissolves
particle size, absence of stiring, temperature, http://www.thesciencedesk.com/pdffiles/FactorsAffectingDissolving.pdf
This lists the three factors and discusses them.
http://www.scribd.com/doc/7466189/Factors-Affecting-Rate-of-Solutions
The rate at which a solute dissolves in a solvent can be influenced by several factors. These factors include:
1. Temperature: Generally, an increase in temperature leads to an increase in the rate of dissolution. This is because higher temperatures provide more energy to the solute particles, allowing them to move and collide more frequently with the solvent particles, which disrupts the solute-solute interactions.
2. Surface area: The rate of dissolution is also related to the surface area of the solute. When the solute is broken down into smaller particles or is in the form of a powder, it exposes a larger surface area to the solvent, facilitating more contact and faster dissolution.
3. Agitation or stirring: Stirring or agitating the mixture enhances the rate of dissolution by ensuring continuous contact between the solute and solvent. This helps to disperse the solute particles and reduce the boundary layer that may inhibit further dissolution.
4. Solvent composition: The nature and properties of the solvent can affect the rate of dissolution. For example, a solvent with similar polarity to the solute will dissolve it faster compared to a solvent with different polarity. Additionally, the presence of other solutes or impurities in the solvent may affect the solute's dissolution rate.
It's important to note that these factors are interconnected, and their influence on the rate of dissolution may depend on the specific solute and solvent pair. Conducting experiments and utilizing knowledge in chemistry can provide a deeper understanding of these factors and their impact on dissolution rates.