Which type of aqueous solution is formed when salt is dissolved in water?

• A. A colloidal solution
• B. A suspension
• C. A saturated solution
• D. A true solution

Answer: (D)

Verified step by step guidance

1. Understand the definitions of the different types of mixtures: a true solution, a colloidal solution, and a suspension.
2. A true solution is a homogeneous mixture where the solute particles are at the molecular or ionic level and completely dissolved in the solvent, resulting in a clear and stable mixture.
3. A colloidal solution contains particles larger than those in a true solution but smaller than in a suspension; these particles do not settle out and can scatter light (Tyndall effect).
4. A suspension has larger particles that are not dissolved and will eventually settle out due to gravity, making the mixture heterogeneous.
5. When salt (an ionic compound) dissolves in water, it dissociates into ions and forms a homogeneous mixture at the molecular level, which is characteristic of a true solution.