NEET > Chemistry Class 12 > Short Tricks: Solutions & Colligative Properties
Short Tricks: Solutions & Colligative Properties Video Lecture - Chemistry Class 12 - NEET
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FAQs on Short Tricks: Solutions & Colligative Properties Video Lecture - Chemistry Class 12 - NEET
| 1. What are colligative properties? |  |
Ans. Colligative properties are the physical properties of a solution that depend on the number of solute particles present, rather than their identity. Examples of colligative properties include boiling point elevation, freezing point depression, and osmotic pressure.
| 2. How can colligative properties be used to determine the molecular weight of a solute? | |
Ans. Colligative properties, such as freezing point depression, can be used to determine the molecular weight of a solute. By measuring the change in freezing point caused by the presence of a solute, and knowing the concentration of the solution, one can calculate the molecular weight using the following equation: ΔT = Kf * m * i, where ΔT is the change in freezing point, Kf is the cryoscopic constant, m is the molality of the solution, and i is the van't Hoff factor.
| 3. What is the significance of osmotic pressure in biological systems? | |
Ans. Osmotic pressure plays a crucial role in biological systems. It helps regulate the movement of water and solutes across cell membranes, maintaining the balance between the intracellular and extracellular environments. Osmotic pressure is also responsible for processes such as osmoregulation, which ensures the proper functioning of cells and tissues. In addition, osmotic pressure is involved in the absorption and transport of nutrients in the body.
| 4. How do solutions with different concentrations affect the boiling point of a solvent? | |
Ans. Solutions with higher concentrations of solute have higher boiling points compared to pure solvents. This phenomenon, known as boiling point elevation, occurs because the presence of solute particles disrupts the formation of solvent vapor bubbles, which are necessary for boiling to occur. As a result, a higher temperature is required for the solution to reach its boiling point.
| 5. Can colligative properties be applied to non-ideal solutions? | |
Ans. Colligative properties are primarily applicable to ideal solutions, where the solute-solvent interactions are similar to those among the solvent molecules. In non-ideal solutions, where there are significant solute-solvent interactions, the colligative properties may deviate from the expected values. However, certain corrections and modifications can be made to account for these deviations and still apply colligative properties to non-ideal solutions to some extent.
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