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What is Solubility?

Solubility is the maximum amount of solute which can be dissolved in 100 gm of Solvent at a particular temperature.

Note : Solubility is defined with respect to solvent. Solubility of salt in water will be different from Solubility of salt in Oil.

Also, note that while mentioning Solubility, we have to mention temperature was well

Example

Solubility of Salt is 36gm (at 20 degree celsius)

  • It means maximum 36 gm of salt can be dissolved in 100 gm of water at 20 degree celsius

Effect of Temperature on Solubility

  • In case of Solids dissolved in Liquids
    • If we increase the temperature, solubility increases
    • If we decrease the temperature, solubility decreases

 

  • In case of Gases dissolved in liquids
    • If we increase the temperature, solubility decreases
    • If we decrease the temperature, solubility increases

 

Effect of Pressure on Solubility

  • In case of Solids dissolved in Liquids
    • Change in pressure doesn't change the solubility

  • In case of Gases dissolved in liquids
    • If we increase the pressure , solubility increases
    • If we decrease the pressure , solubility decreases

 

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CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Accounts and English at Teachoo