What is the primary purpose of stirring a solution while it is being heated?

• A. To ensure uniform temperature throughout the solution
• B. To prevent the solution from boiling
• C. To decrease the solubility of solutes in the solution
• D. To increase the rate of evaporation of the solvent

Answer: (A)

Verified step by step guidance

1. Understand that when heating a solution, temperature gradients can form, meaning some parts of the solution may be hotter than others.
2. Recognize that stirring helps to mix the solution continuously, distributing heat evenly throughout the entire volume.
3. By ensuring uniform temperature, stirring prevents localized overheating or underheating, which can affect reaction rates or solubility.
4. Note that stirring does not prevent boiling directly; boiling depends on reaching the solvent's boiling point.
5. Also, stirring does not decrease solubility or increase evaporation rate significantly; its main role is to maintain consistent temperature.