Question

Hydrogen is prepared from h2o by adding which agent

Answer 1

Answer:

o2

Explanation:

H+o2-h2o..................

Answer 2

Preparation of Hydrogen

Explanation:

It is prepared from water by the process of electrolysis .

In this Platinum electrodes are used for passing current .

The pure water is not used , it is the acidified by adding sulphuric acid so, that its conductivity is increased .

When current is passed the water split into hydrogen ion and oxygen ions and accordingly reaction at cathode and anode occurs .

H₂O-------> 2H⁺ + O²⁻

Reaction at cathode

2H⁺ + 2 electrons ---> H₂

Reaction at anode

O²⁻- 2electrons ---> O₂

This is how hydrogen is produced from water .