Q:

Does iron react with hydrochloric acid?

A:

Iron reacts with hydrochloric acid to produce dihydrogen and iron(II) chloride. When an HCl solution is added to iron powder, the H+ and Cl- ions from hydrochloric acid disassociate. The Cl- anions form ionic bonds with iron to form FeCl2. The H+ ions pair up, and release as hydrogen gas.

FeCl2, or iron(II) chloride, is a paramagnetic solid with a high melting point and off-white appearance. According to the Royal Society of Chemistry, iron(II) chloride is also soluble in water and gives aqueous solutions a yellowish color. Dihydrogen, or hydrogen gas, is highly flammable and burns in the air at a wide range of concentrations.


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