Calculate the volume of hydrogen that will be released when 150 g of a 10% hydrochloric acid

Calculate the volume of hydrogen that will be released when 150 g of a 10% hydrochloric acid solution interacts with an excess of iron.

1. Let’s write down the equation of interaction of hydrochloric acid with iron:

Fe + 2HCl = FeCl2 + H2 ↑;

2. find the mass of hydrogen chloride:

m (HCl) = w (HCl) * m (solution HCl) = 0.1 * 150 = 15 g;

3.Calculate the chemical amount of hydrogen chloride:

n (HCl) = m (HCl): M (HCl) = 15: 36.6 = 0.411 mol;

4.determine the amount of released hydrogen:

n (H2) = n (HCl): 2 = 0.411: 2 = 0.2055 mol;

5.Calculate the volume of hydrogen:

V (H2) = n (H2) * Vm = 0.2055 * 22.4 = 4.6 liters.

Answer: 4.6 liters.