Acids, Bases and Salts 3

CHEMISTRY SSS1 Second Term

WEEK 11

Acids, Bases, and Salts 3

Performance Objectives

The student should be able to:

  1. Explain the solubility of salts in water

Content

Solubility of salts in water

Salts are built of positive and negative ions which are bound together by the force of attraction of their opposite charges. If the energy needed to break their ionic bonds is lower than the energy given off by an interaction of the ions with a solvent (ie. water), the salts will dissociate and interact with solvent and thus dissolve.

At first, the salt dissociates quickly and the reaction is generally going one way:

NaCl(s) ---àNa+(aq) + Cl-(aq)

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