Which of the following concentration units will not change if the solution is heated?
A) molarity
B) %(w/v)
C) both a and b
D) neither a nor b

Question

Quizplus · Accepted Answer

Molarity and % (w/v) both depend on the volume of the solution, which can change upon heating due to expansion or evaporation. Therefore, neither of these concentration units will remain constant if the solution is heated. The only concentration unit that is not affected by changes in volume or temperature is molality (moles of solute per kilogram of solvent), which is not listed as a choice.

Which of the Following Concentration Units Will Not Change If