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Water — CHEMISTRY STD 9 — Question

ICSE BoardEnglish MediumSTD 9CHEMISTRYWater3 Marks
Question
(a) Why is temperature always mentioned with saturated solution?
(b) State two ways, by which a saturated solution can be changed to unsaturated solution.
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Answer

(a) The solubility of a solid in a solution increases with increasing temperature. If the temperature of a saturated solution is increased, the solution will become unsaturated. Thus, the temperature plays an important role in specifying whether a solution is saturated or not.
(b) two ways, by which a saturated solution can be changed to unsaturated solution.
• On heating, a saturated solution becomes unsaturated and more solute can be dissolved in the solution.
• By adding more solvent, a saturated solution can be made unsaturated.

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