1.

What do you understand by 'auto-protolysis' of water? What is significance?

Answer»

Solution :AUTO-pyotolysis of water means 'self-ionisation' which PROCEEDS as FOLLOWS:
`"" underset("Acid-I")(H_(2)O(l))+underset("Base-II")(H_(2)O(l)) Leftrightarrow underset("Acid-II")(H_(3)O^(+)(aq))+underset("Base-I")(O^(-)(aq))`
Because of auto protolysis, water behaves both as a Bronsted acid and Bronsted base i.e. it is amphoteric in nautre
`"" underset("Acid-I")(H_(2)O(l))+underset("Base-II")(NH_(3)(l)) Leftrightarrow underset("Acid-II")(NH_(4)^(+)(aq))+underset("Base-I")(OH^(-)(aq))`


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