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Expressing Concentration of Solution: Mole Fraction Video Lecture - Chemistry Class 12 - NEET

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FAQs on Expressing Concentration of Solution: Mole Fraction Video Lecture - Chemistry Class 12 - NEET

1. What is mole fraction and how is it calculated?
Ans. Mole fraction is a way to express the concentration of a component in a solution. It is calculated by dividing the moles of the component by the total moles of all components in the solution.
2. How is mole fraction different from molarity?
Ans. Mole fraction is a dimensionless quantity that represents the ratio of moles of a component to the total moles in a solution, while molarity is a measure of the concentration of a solute in a solution, expressed as the number of moles of solute per liter of solution.
3. Can the mole fraction of a component exceed 1?
Ans. No, the mole fraction of a component cannot exceed 1. Mole fraction is a ratio and is always expressed as a decimal value between 0 and 1, inclusive.
4. How is mole fraction useful in determining vapor pressure?
Ans. Mole fraction is useful in determining the vapor pressure of a solution through Raoult's law. According to Raoult's law, the vapor pressure of a component in a solution is directly proportional to its mole fraction in the solution.
5. Is mole fraction affected by changes in temperature and pressure?
Ans. No, mole fraction is independent of changes in temperature and pressure. It is a ratio of moles and does not change with variations in external conditions. However, the mole fraction of a component can change if the composition of the solution is altered by adding or removing other components.
150 videos|377 docs|213 tests
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