Same chapter3 marksDifficulty: Medium
The solubility of potassium nitrate at 30 °C is 45 g per 100 g of water. What mass of the salt will saturate 250 g of water at that temperature?
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3 marksDifficulty: Medium
Define solubility and state two factors that affect the solubility of a solid in water.
Original Khojo Papers practice question — not from a past board paper.
Answer
Solubility is the mass of solute in grams that saturates 100 grams of solvent at a given temperature. It depends on the nature of the solute and the solvent, and on the temperature: the solubility of most solids increases as the temperature rises.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Pressure has almost no effect on the solubility of a solid, but a large effect on that of a gas.
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