The above chemical equation represents the chemical reaction between chromium (III) oxide (Cr2O3) and hydrogen (H2) to form chromium (Cr) and water (H2O).
- Reaction Conditions
This reaction occurs at high temperature (around 400 to 500 degrees Celsius) and high pressure.
- Reaction Process
When Cr2O3 is mixed with H2 at high temperatures and pressure, it will react and transform into Cr and H2O. This reaction is a type of reduction reaction, in which Cr2O3 is reduced by H2 to form Cr and H2O.
- Observations
In this reaction, we will see changes in color and temperature. When Cr2O3 reacts with H2, the color of the reactants changes from the green of Cr2O3 to the silver of Cr. Simultaneously, the reaction will generate heat, increasing the system’s temperature.