Question

How much litters of hydrogen gas will be produced from one liter of water

Answer 1

One litre of water will produce 111/0.0899 =1235 litres of hydrogen and 888.81/1.429 = 622 litres of oxygen. Note that according to Avogadro's law, the volume of hydrogen is about twice that of oxygen, because 1 mol of water produces 1 mol of hydrogen and 1/2 mol of oxygen.