The reaction of , water gas `(CO+H_2)+H_2` at 673 K, 300 atmosphere in presence of the catalyst `Cr_3O_3//ZnO` is used for the manufacture of

Options

A. HCHO
B. HCOOH
C. `CH_3OH`
D. `CH_3COOH`

Answer

To solve the question regarding the reaction of water gas (CO + H2) in the presence of a catalyst (Cr2O3/ZnO) at a specific temperature and pressure, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reaction:**
The reaction involves water gas, which is a mixture of carbon monoxide (CO) and hydrogen gas (H2). The reaction can be represented as:
\[ CO + 2H_2 \rightarrow CH_3OH \]
Here, methanol (CH3OH) is produced from carbon monoxide and hydrogen.

2. **Conditions of the Reaction:**
The reaction takes place at a temperature of 673 K and a pressure of 300 atmospheres. These conditions favor the production of methanol.

3. **Role of the Catalyst:**
The catalyst used in this reaction is a combination of chromium oxide (Cr2O3) and zinc oxide (ZnO). Catalysts are substances that increase the rate of a chemical reaction without being consumed in the process.

4. **Final Product:**
The final product of the reaction is methanol (CH3OH). This compound is widely used in various applications, including as a fuel, solvent, and in the production of formaldehyde and other chemicals.

5. **Conclusion:**
Therefore, the reaction of water gas (CO + H2) at 673 K and 300 atmospheres in the presence of the catalyst Cr2O3/ZnO is used for the manufacture of methanol.

### Final Answer:
The reaction is used for the manufacture of **methanol (CH3OH)**.