How much hydrogen is released during the decomposition of 1 kg of water?

The decomposition reaction of water is described by the following chemical reaction equation:

H2O = H2 + ½ O2;

There are two hydrogen atoms in the water and hydrogen molecule. Therefore, from a unit amount of water substance, one mole of hydrogen can be obtained.

Let’s determine the amount of a substance in 1,000 grams of water.

M H2O = 2 + 16 = 18 grams / mol;

N H2O = 1,000/18 = 55.5 mol;

The same amount of hydrogen will be produced.

Let us determine the volume of 55.5 mol of hydrogen.

One mole of ideal gas under normal conditions takes a volume of 22.4 liters.

V H2 = 55.5 x 22.4 = 1243.2 liters;