Physical properties that depend on relative concentration but not identity are called?

• A. Collegiate properties
• B. Osmolarity
• C. Boiling point
• D. Vapor pressure

Answer: (A)

Colligative properties are physical properties that depend on the number of dissolved particles, not on their identity. Because they reflect how many particles are present, they change with concentration but not with what the solute actually is. Classic examples include boiling point elevation, freezing point depression, vapor pressure lowering, and the generation of osmotic pressure. The term that names this group is colligative properties. Among the options, the one that aligns with this concept is the misspelled form that reads as collegiate properties, which is essentially the intended term. Osmolarity relates to how concentrated the solution is, but it’s a measure of concentration rather than the category name itself, while boiling point and vapor pressure are specific colligative effects rather than the label for the group.