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| Electrolytic Dissociation |
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| Electrovalent substances are made up of ions in the solid state. The oppositely charged ions are held together by strong electrostatic (coulombic) force of attraction. Due to these forces the ions cannot move (Fig. 4.2). |
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| However, when these substances are dissolved in water or melted, the ions free themselves from this binding. Thus the break up of an electrovalent compound into free mobile ions when dissolved in water or when melted, is called electrolytic dissociation. |
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| In the liquid state the ions become free and mobile. But the oppositely charged ions always remain in close proximity of each other (Fig. 4.3). |
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Electrolytes and Electrolysis
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