A student in a chemistry lab decides to Stir solution in order to make the solute dissolve faster. Why will this work

Question

It will increase the surface area of the solute particles

It will decrease the amount of energy needed for the solute to dissolve

It will decrease the distance between the solute and solvent particles

It will increase how often the solute and solvent particles collide

Answer 1

The best explanation for why stirring a solution makes the solute dissolve faster is:

It will increase how often the solute and solvent particles collide.

Stirring helps to distribute solute particles more evenly throughout the solvent, which increases the frequency of collisions between solute and solvent particles. This increased interaction promotes the dissolution process, allowing the solute to dissolve more quickly.

While stirring may indirectly contribute to increasing the effective surface area of the solute and can enhance the overall mixing of the solution, the primary factor is the increased rate of collisions between solute and solvent particles.