What mass of salt can be obtained by dissolving 70 g of iron in an excess of hydrochloric acid?

1. Dissolution of iron in hydrochloric acid proceeds according to the equation:

Fe + 2HCl = FeCl2 + H2;

2.Let’s find the chemical amount of iron to be dissolved:

n (Fe) = m (Fe): M (Fe) = 70: 56 = 1.25 mol;

3. Determine the amount of salt and calculate its mass:

n (FeCl2) = n (Fe) = 1.25 mol;

m (FeCl2) = n (FeCl2) * M (FeCl2);

M (FeCl2) = 56 + 35.5 * 2 = 127 g / mol;

m (FeCl2) = 1.25 * 127 = 158.75 g.

Answer: 158.75 g.