Which concentration becomes smaller as the temperature is increased from 20°C to 80°C?
A)mass %
B)molality
C)molarity
D)mole fraction

Question

Quizplus · Accepted Answer

As the temperature increases, the volume of the solution also increases due to thermal expansion, causing the concentration to decrease. Molarity is defined as the number of moles of solute per litre of the solution, therefore, as the volume of the solution increases, the molarity decreases proportionally. Mass %, molality, and mole fraction, on the other hand, are all dependent on the mass or moles of solute and solvent, which are not affected by temperature change.

Which Concentration Becomes Smaller as the Temperature Is Increased from 20°C