Question

In electrolysis of water, to different gasses are formed at two different electrodes.

Answer 1

Oxygen will collect at the positively charged electrode (anode) and hydrogen will collect at the negatively charged electrode (cathode). Note that hydrogen is positively charged in the H2O molecule, so it ends up at the negative electrode. (And vice versa for oxygen.)

Answer 2

Answer :

$by \: go.o.gle$

In electrolysis, water is decomposed in the presence of electricity to its components. The reaction is shown as below:

2H

2

O(l)→2H

2

(g)+O

2

(g)

As you can see that water splits in to 2 molecules of hydrogen and 1 molecule of oxygen. Since, number of molecules of hydrogen released is double the number of molecules of oxygen released, Volume occupied by hydrogen gas is double the volume occupied by oxygen gas.

Hence, electrode at which hydrogen gas is collected (Cathode) shows double the volume than the electrode at which oxygen gas is collected (Anode).

By Me

Electrolysis of Water. Electrolysis of water is the process by which water is decomposed into oxygen and hydrogen gas, when electric current is passed through it.

Steel and iron are the most commonly used for electrolysis of water. These electrodes are used as anode and it is sacrificed in electrolysis, as the anode rusts (get ox.idiz.ed) and the cathode de-rusts (get reduced).

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