The combustion reaction of hydrogen is described by the following chemical equation:
2H2 + O2 = 2H2O;
Two moles of hydrogen react with one mole of oxygen.
Let’s determine the amount of substance in 10 grams of oxygen. Its molar mass is 16 x 2 = 32 grams / mol.
N O2 = 10/32 = 0.3125 mol;
The amount of hydrogen will be:
N H2 = 0.3125 x 2 = 0.625 mol;
Under normal conditions, one mole of ideal gas takes up a volume of 22.4 liters.
0.625 mol of hydrogen will occupy the volume:
V H2 = 0.625 x 22.4 = 14 liters;
The molar mass of hydrogen is 2 grams / mol.
The mass of hydrogen will be:
m H2 = 0.625 * 2 = 1.25 grams;
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