Calculate the volume of hydrogen and oxygen that can be obtained by decomposing 360 g

Calculate the volume of hydrogen and oxygen that can be obtained by decomposing 360 g of water with an electric current.

Water electrolysis will proceed according to the scheme.

2H2O = 2H2 + O2.

Let’s calculate the number of moles of substances:

n (H2O) = m / Mr = 360/18 = 20 mol.

The number of moles of hydrogen will be the same, and oxygen is half as much.

n (H2) = 20 mol. n (O2) = n (H2) / 2 = 10 mol.

The volume of gases obtained is:

V (H2) = n • Vm = 20 • 22.4 = 448 HP

V (O2) = n • Vm = 10 • 22.4 = 224 liters.