Define solubility and describe effects of temperature and pressure on solubility. | web4study

Define solubility and describe effects of temperature and pressure on solubility.



Solubility:

Solubility is defined as the amount in grams of a solute required to be dissolved in 100 grams or 100 ml of a solvent to prepare a saturated solution at room temperature.

FACTORS AFFECTING SOLUBILITY:

Many factors affect the solubility of·a solute in a solvent These factors may be:

  • Temperature
  • Pressure (For gases).
  • Nature of solute
  • Nature of solvent

Effect of temperature on solubility:

The solubility of a solid in liquid or solubility of partially · miscible liquids increases with inc.rease in temperature. Thus solubility of sugar in water at 0°C is 179 g/ 100ml whereas at 100°c it is 487 g / 100ml.

But the solubility of gases in a liquid decreases with the increase in temperature. For this reason, when a glass of cold water is warmed, bubbles of air are seen on the inside of the glass.

 


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