Which of the Following is Dependent on Temperature (A) Weight Percentage (B) Molality (C) Molarity (D) Mole Fraction

Answer: (C)

Explanation: 

• Weight percentage is defined as;

Weight percentage = (Mass of solute /Mass of solution) ×100

• Molarity is defined as;

Molarity = (Number of moles of solute /Volume of solution in L)

• Mole fraction is defined as;

Mole fraction = [Number of moles of solute or solvent /(Number of moles of solute + Number of moles of solvent)]

• Molality is defined as;

Molality = (Moles of solute /Kilogram of solvent)

Key Point

• The number of moles of solute in a solution is unaffected by temperature, but the volume of the solution is. The volume of the solution grows as the temperature rises.

• So, molarity involves the volume of a solution, and since volume is affected by temperature, molarity is also affected by temperature.

• Volume words are not used in other alternatives. Only weight words are involved, and they are unaffected by temperature.