Determine the mass of bromine reacted with hydrogen if you received 8 liters of hydrogen bromide.

1. In the reaction system, the interaction takes place:

H2 + Br2 = 2HBr;

2. Hydrogen bromide under normal conditions has a gaseous state, applying the calculation formula using the molar volume, we calculate its chemical amount:

n (HBr) = V (HBr): Vm = 8: 22.4 = 0.3571 mol;

3. Find the number of moles of the original bromine:

n (Br2) = n (HBr): 2 = 0.3571: 2 = 0.1786 mol;

4. Determine the mass of bromine that reacted:

m (Br2) = n (Br2) * M (Br2) = 0.1786 * 160 = 28.58 g.

Answer: 28.58 g.