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Detailed information about the chemical equation:
The chemical equation above describes the chemical reaction between iron (III) oxide (Cr2O3) and hydrochloric acid (HCl), resulting in the formation of iron (III) chloride (CrCl3) and water (H2O). -
Reaction conditions:
For the reaction to occur, the necessary condition is that iron (III) oxide and hydrochloric acid must come into direct contact with each other in a sufficiently high temperature environment. -
The Reaction process:
- Cr2O3 is an oxide of the metal chromium. When it encounters HCl, it transforms into CrCl3 and generates H2O.
- Thus, each molecule of Cr2O3 reacts with 2 molecules of HCl to produce 2 molecules of CrCl3 and 3 molecules of H2O.
- If the number of molecules of any substance is insufficient, the reaction will not fully occur, leading to the presence of excess substance, which does not dissolve completely.
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Phenomenon that occurs:
When the green solid of Cr2O3 is added to the hydrochloric acid solution, the reaction occurs with the formation of the green solution of CrCl3 and water vapor.