Explain three factors that affect the solubility of solvent and solute. [3 MARKS]
Explain three factors that affect the solubility of solvent and solute. [3 MARKS]
Explanation (any three) : 1 Mark each
i. Temperature: For majority of solutions of solid-in-liquid and liquid-in-liquid types, solubility increases with temperature. However for solutions of gases-in-water type, solubility decreases with increase in temperature.
ii. Pressure: It is applicable to gas-in-liquid solutions. An increase in pressure increases the solubility of a gas. For example, aerated drinks contain carbon dioxide gas under pressure.
iii. Mechanical Stirring: Mechanical stirring increases solubility. For example, sugar dissolves faster on stirring with a spoon.
iv. Size of Solute Particles: Smaller the particle size of solute, greater is the solubility. For example, it is easier to dissolve powdered sugar than granules of sugar.
Explanation (any three) : 1 Mark each
i. Temperature: For majority of solutions of solid-in-liquid and liquid-in-liquid types, solubility increases with temperature. However for solutions of gases-in-water type, solubility decreases with increase in temperature.
ii. Pressure: It is applicable to gas-in-liquid solutions. An increase in pressure increases the solubility of a gas. For example, aerated drinks contain carbon dioxide gas under pressure.
iii. Mechanical Stirring: Mechanical stirring increases solubility. For example, sugar dissolves faster on stirring with a spoon.
iv. Size of Solute Particles: Smaller the particle size of solute, greater is the solubility. For example, it is easier to dissolve powdered sugar than granules of sugar.
