1.

Give reasons for the following Lead bromide undergoes electrolytic dissociation in the molten state but is a non-electrolyte in the solid state.

Answer»

Solution :In `PbBr_2` in the solid STATE, there are STRONG electrostatic FORCES of attraction between `Pb^(2+)` and `Br^(-)` ions. The ions can.t move. Hence, it is a non- electrolyte. In the molten state, the electrostatic forces of attraction between `Pb^(2+)` and `Br^-`ions are very much decreased. They undergo electrolytic dissociation easily.


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