Question
Chemistry Question on Laws of thermodynamics
The quantity which changes with temperature:
A
Mole fraction
B
Mass Percentage
C
Molarity
D
Molality
Answer
Molarity
Explanation
Solution
Molarity is defined as the number of moles of solute per liter of solution. Since the volume of a solution is affected by temperature due to thermal expansion or contraction, molarity also changes with temperature.
Mass percentage, molality, and mole fraction, however, are temperature-independent as they depend only on the ratio of masses or moles of solute and solvent, which do not vary with temperature.
The correct option is (c) : Molarity