Give reason for the following: (a) Aluminium oxide is considered as an amphoteric oxide. (b) Ionic compounds conduct electricity in molten state. -Chemistry

Give reason for the following: (a) Aluminium oxide is considered as an amphoteric oxide. (b) Ionic compounds conduct electricity in molten state. -Chemistry
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a) Aluminium oxide reacts with both acids as well as bases.b) Ionic compounds in molten state conduct electricity. Explanation: a) An amphoteric oxide as one that shows chemical reactivity with both acids as well as bases. Aluminium oxide is as an amphoteric oxide as it behaves as a basic oxide and reacts with an acid to from salt and water. Whereas in other cases, it reacts with a base to produce the same. b) Ionic compounds are generally solids. In solid state, the molecules are bound tightly by electrostatic force. So there are no free ions. But when the ionic compounds are in a molten state, the electrostatic force is comparatively weak and free ions are present in the liquid state. These free ions enable the solution to conduct electricity.
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