Why acidulated water is taken for electrolysis of water?

Produced at cathod during electrolysis of water-

Whiich gases are liberated at the cathode and anode during electrolysis of water.

A current of 10A was allowed to pass through acidulated water for 3 min 13s. What mass of water will be decomposed?

What is the result of electrolysis of water using platinum electrodes.

Draw a labelled diagram of the apparatus used in electrolysis of water.

Value of standard electrode potential for the oxidation of Cl^(-) ions is more positive than that of water, even then in the electrolysis of aqueous sodium chloride, why is Cl^(-) oxidised at anode instead of water ?

4.5 g Al is produced at the cathode during the electrolysis of molten Al_(2)O_(3) . If the same amount of electricity is passed through acidulated water, then at STP the volume of liberated oxygen at the anode would be -

If a current of 10 A is passed through acidulated water for 100 s then what volume of electrolytic gas at STP will be produced?

why ice floats on water?

why kerosene oil floats on water?