An industrial process used for the production of hydrogen gas on a large scale.

Answer

**Step-by-Step Solution:**

**Step 1: Production of Water Gas**
- The Bosch process begins with the reaction of carbon with hot steam.
- This reaction occurs at a high temperature of about 1200 degrees Celsius.
- The chemical reaction can be represented as:
\[ C + H_2O \rightarrow CO + H_2 \]
- In this step, carbon (C) reacts with water (H2O) to produce carbon monoxide (CO) and hydrogen gas (H2). The resulting mixture of CO and H2 is known as water gas.

**Step 2: Separation of Hydrogen from Carbon Monoxide**
- The next step involves the separation of hydrogen from carbon monoxide in the water gas produced in Step 1.
- This is achieved by reacting the water gas with excess steam.
- The reaction takes place at a temperature of approximately 450 degrees Celsius.
- In this step, iron(III) oxide (Fe2O3) acts as a catalyst, and chromium(III) oxide (Cr2O3) acts as a promoter to enhance the reaction.
- The chemical reaction can be represented as:
\[ CO + H_2O \rightarrow H_2 + CO_2 \]
- Here, carbon monoxide (CO) reacts with water (H2O) to produce additional hydrogen gas (H2) and carbon dioxide (CO2).

**Final Outcome:**
- The overall process of the Bosch process effectively produces hydrogen gas on a large scale by first generating water gas and then separating hydrogen from carbon monoxide.

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