Question

which statement best describes a true solution?
a true solution will settle out after a short period of time.
a true solution coagulates when heated or boiled
a true solution will not separate in a centrifuge.
a true solution has a cloudy appearance.

Explanation:

• Option A: True solutions are homogeneous, and solute particles don't settle out over time (suspensions settle). So this is incorrect.
• Option B: Coagulation on heating/boiling is a property of colloids or some suspensions, not true solutions. Incorrect.
• Option C: True solutions have solute particles (molecules/ions) that are too small to be separated by centrifugation (which is used for larger - sized particles in colloids/suspensions). This is correct.
• Option D: True solutions are transparent (not cloudy); cloudy appearance is typical of colloids or suspensions. Incorrect.

Answer:

C. A true solution will not separate in a centrifuge.