What do you understand by the term .auto protolysis. of water ? What is its significance ?

What do you understand by the term .auto protolysis. of water ? What i

1.	What do you understand by the term .auto protolysis. of water ? What is its significance ?
Answer» Solution :The auto-protolysis (self-ionization) of WATER takes place as follows: `{:(H_2O_((l))+, H_2O_((l)) hArr , H_3O_((AQ))^(+)+, OH_((aq))^(-)),("acid-1", "base-2","acid-2","base-1"),("(acid)","(base)","(conjugate acid)","(conjugate base)"):}` (ii) REDOX Reactions Involving Water : Water can be easily reduced to dihydrogen by highly ELECTROPOSITIVE metals. `2H_2O_((l)) + 2Na_((S)) to 2NaOH_((aq))+ H_(2(g))` Thus, it is a great source of dihydrogen. Water is oxidised to `O_2` during photosynthesis. `6CO_(2(g)) + 12H_2O_((l)) to C_6H_12O_(6(aq)) + 6H_2O_((l)) + 6O_(2(g))` Withfluorine also it is oxidised to `O_2` `2F_(2(g)) + 2H_2O_((l)) to 4H_((aq))^(+) + 4F_((aq))^(-) + O_(2(g))`