Define the following modes of expressing the concentration of a solution: Mass percentage,Molarity,Molality,and Mole fraction. Which of these modes are independent of temperature and why?
(N/A) $1$. Mass percentage: The mass of the solute in grams present in $100 \ g$ of the solution.
$2$. Molarity $(M)$: The number of moles of solute dissolved in $1 \ L$ of solution.
$3$. Molality $(m)$: The number of moles of solute dissolved in $1 \ kg$ of solvent.
$4$. Mole fraction $(x)$: The ratio of the number of moles of one component to the total number of moles of all components in the solution.
Modes independent of temperature are Molality and Mole fraction.
Reason: These modes are defined in terms of mass (or moles),which do not change with temperature. In contrast,Molarity involves volume,which changes with temperature due to thermal expansion or contraction.
$2$. Molarity $(M)$: The number of moles of solute dissolved in $1 \ L$ of solution.
$3$. Molality $(m)$: The number of moles of solute dissolved in $1 \ kg$ of solvent.
$4$. Mole fraction $(x)$: The ratio of the number of moles of one component to the total number of moles of all components in the solution.
Modes independent of temperature are Molality and Mole fraction.
Reason: These modes are defined in terms of mass (or moles),which do not change with temperature. In contrast,Molarity involves volume,which changes with temperature due to thermal expansion or contraction.
Explore More
Similar Questions
The molarity of a solution containing $15 \text{ g}$ of $\text{NaOH}$ in $900 \text{ ml}$ of solution will be . . . . . . . (in $\text{ M}$)
DifficultGUJCET 2026
View SolutionWhat is the molarity of a solution containing $0.8 \ g$ of $NaOH$ (molar mass $40 \ g \ mol^{-1}$) in $150 \ cm^{3}$ of water?
Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: At $10^{\circ} C$,the density of a $5 \ M$ solution of $KCl$ is given. The solution is cooled to $-21^{\circ} C$. The molality of the solution will remain unchanged.
Reason $R$: The molality of a solution does not change with temperature as mass remains unaffected by temperature.
In the light of the above statements,choose the correct answer from the options given below:
Assertion $A$: At $10^{\circ} C$,the density of a $5 \ M$ solution of $KCl$ is given. The solution is cooled to $-21^{\circ} C$. The molality of the solution will remain unchanged.
Reason $R$: The molality of a solution does not change with temperature as mass remains unaffected by temperature.
In the light of the above statements,choose the correct answer from the options given below:
DifficultJEE MAIN 2022
View SolutionWhich of the following relationships between $Normality$ and $Molarity$ is correct?
Easy
View SolutionWhat is mole fraction? Explain in brief.
Difficult
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo