# The volume of hydrogen that completely reacted according to the reaction equation

The volume of hydrogen that completely reacted according to the reaction equation H2 + CI2 = 2HCI with 0.5 mol of chlorine.

1. Let’s make the equation of the reaction between hydrogen and chlorine.

Using the equation, we determine the quantitative ratios of substances.

H2 + Cl2 = 2HCl.

1 mole of chlorine reacts with 1 mole of hydrogen, that is, 1: 1.

This means that the amount of chlorine and hydrogen will be the same.

n (H2) = n (Cl2) = 0.5 mol.

2. Let’s calculate the volume of hydrogen by the formula:

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 = 22.4 L / mol × 0.5 mol = 11.2 L.

Answer: V (H2) = 11.2 liters.

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