Solutions — Important Questions
Maharashtra Board · Class 12 · Chemistry
42 important questions from Solutions for Maharashtra Board Class 12 Chemistry, with answers. Includes multiple choice and multiple correct questions.
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Important Questions from Solutions
Which factors affect the solubility of a solid in liquid?
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Nature of solute and solvent, Temperature
For solids in liquids, solubility depends on nature of solute-solvent interactions and temperature. Pressure has negligible effect on solid-liquid systems. Color is not a factor affecting solubility.
Which of the following are colligative properties?
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Osmotic pressure, Boiling point elevation, Freezing point depression, Relative lowering of vapor pressure
Colligative properties depend only on number of solute particles, not their nature. The four main colligative properties are osmotic pressure, boiling point elevation, freezing point depression, and vapor pressure lowering.
The boiling point elevation constant (Kb) depends on:
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Nature of solvent only
Kb is called ebullioscopic constant and is a characteristic property of the solvent only. It represents the boiling point elevation produced by 1 molal solution.
Which concentration unit is used for calculating osmotic pressure?
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Molarity
Osmotic pressure is calculated using molarity (π = MRT) because osmotic pressure measurements are made at constant temperature, so molarity is appropriate.
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