PPT Slide

Factors That Affect Solubility:

Acidity / pH

• Again, Le Ch’telierís principle applies, for eg.:

• • If the F- is removed, then the equilibrium shifts towards the decrease (the right) and CaF2 dissolves.
  • F-, a weak base,can be removed by adding a strong acid:

• • As pH decreases, [H+] increases and solubility increases since fluoride ion is removed as HF.

• The effect of pH on solubility is dramatic.

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