Which of the following is dependent on temperature?
A
Mole fraction
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B
Weight percentage
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C
Molality
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D
Molarity
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Solution
The correct option is D Molarity All volume dependent concentration terms are dependent on temperature.
Molarity : Molarity is defined as the moles of a solute per liters of a solution.
Normality: Normality is described as the number of gram equivalents of solute present in one litre of a solution.
Both Molarity and normality are dependent on volume and hence temperature dependent.
Molality: It is defined as the number of moles of solute per kilogram of solvent.
Mole fraction represents the number of molecules of a particular component in a mixture divided by the total number of moles in the given mixture.
Both molality and mole fraction do not have any volume term and hence are temperature independent.
Temperature dependent terms :
1. Strength (S)
2. Molarity (M)
3. Normality (N)
4. % w/V
5. % V/V
Temperature independent terms :
1. Molality (m)
2. Mole fraction (χ)
3. %w/w
Option (b) is correct