-
The chemical equation above describes the reaction process between iron (Fe) and concentrated sulfuric acid (H2SO4) to create iron(III) sulfate (Fe2(SO4)3) and hydrogen (H2). In an iron(III) sulfate molecule, each iron ion is bonded to 3 sulfate ions. This is a redox reaction, in which iron is oxidized from an oxidation state of 0 to +3, while the hydro sulfates are reduced from +6 to +4.
-
Reaction conditions:
- Temperature: the reaction occurs at room temperature or at a higher temperature to create favorable conditions for the reaction.
- The sulfuric acid needs to be concentrated to have enough strength to react with iron.
- Environment: It must be ensured that no outside air penetrates into the reaction, otherwise iron will be oxidized by the air.
-
Reaction process: Iron reacts with concentrated sulfuric acid to form iron(III) sulfate and hydrogen. The reaction may occur quickly or slowly depending on the temperature conditions and the concentration of the acid.
-
Phenomenon taking place: When the reaction occurs, we can observe that iron gradually dissolves and creates gas bubbles (hydrogen). At the end of the reaction, we obtain a brownish-red solution of iron(III) sulfate.