Identify the type of reaction when dilute hydrochloric acid is added to iron filings.
Double Displacement Reaction
In the given reaction, hydrochloric acid dissociates. The released chloride ions oxidize the iron molecules. The hydrogen ions are reduced to hydrogen gas. Therefore, hydrogen gas and iron chloride are produced.
Fe(s) + 2HCl(aq) → FeCl2(aq) + H2(g)