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What do you understand by the term .auto protolysis. of water? What is its significance ? |
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Answer» Solution :Autoprotolysis means self ionisation of water. It may be represented of `underset("Acid"_1)(H_2O_((l)))+ underset("BASE"_2)(H_2O_((l))) hArr underset("Acid"_2)(H_3O_((aq))^(+)) +underset("Base"_1)(OH_((aq))^(-))` Due to autөprotolysis, water is amphoteric in NATURE. i.e. it reacts with both acids and BASES. If acts as a base towards acids stronger than itself and as an acid towards base stronger then itself. For example: `underset("Acid"_1)(H_2O_((l)))+ underset("Base"_2)(NH_(3(aq))) to underset("Acid"_2)(NH_(4(aq))^(+)) +underset("Base"_1)(OH_((aq))^(-))` `underset("Base"_1)(H_2O_((l)))+ underset("Acid"_2)(H_2S_((aq)))to underset("Acid"_1)(H_3O^(+))+ underset("Base"_2)(HS^-)` |
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