How much oxygen will react with 11.2 liters of hydrogen?

Let’s find the amount of the substance hydrogen.

n = V: Vn.

n = 11.2 L: 22.4 L / mol = 0.5 mol.

Let’s compose the reaction equation, find the quantitative ratios of substances.

2H2 + O2 = 2H2O

According to the reaction equation, there is 1 mole of O2 per 2 mol of H2. Substances are in quantitative ratios of 2: 1.

The amount of oxygen substance O2 is 2 times less than the amount of substance H2.

n (О2) = ½ n (H2) = 0.5: 2 = 0.25 mol.

Find the volume of O2.

V = Vn n, where Vn is the molar volume of gas, equal to 22.4 l / mol, and n is the amount of substance.

V = 0.25 mol × 22.4 L / mol = 5.6 L.

Answer: 5.6 liters.

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