Water does not produce CO on reacting with

Options

A. `CO_2`
B. `C`
C. `CH_4`
D. `C_3H_8`

Answer

To determine which reaction does not produce carbon monoxide (CO) when water reacts with certain substances, we can analyze the reactions of water with different compounds.

### Step-by-Step Solution:

1. **Identify the Compounds**: We need to consider the following compounds:
- Carbon Dioxide (CO2)
- Carbon (C)
- Methane (CH4)
- Propane (C3H8)

2. **Reactions with Water**:
- **Reaction with CO2**:
\[ \text{CO}_2 + \text{H}_2\text{O} \rightarrow \text{H}_2\text{CO}_3 \quad (\text{carbonic acid}) \]
- This reaction produces carbonic acid and does not produce CO.

- **Reaction with C (Carbon)**:
\[ \text{C} + \text{H}_2\text{O} \rightarrow \text{CO} + \text{H}_2 \]
- This reaction produces carbon monoxide (CO) and hydrogen (H2).

- **Reaction with CH4 (Methane)**:
\[ \text{CH}_4 + \text{H}_2\text{O} \rightarrow \text{CO} + \text{H}_2 \]
- This reaction also produces carbon monoxide (CO) and hydrogen (H2).

- **Reaction with C3H8 (Propane)**:
\[ \text{C}_3\text{H}_8 + \text{H}_2\text{O} \rightarrow \text{CO} + \text{H}_2 \]
- This reaction produces carbon monoxide (CO) and hydrogen (H2) as well.

3. **Conclusion**:
- Out of the four reactions analyzed, only the reaction of carbon dioxide (CO2) with water does not produce carbon monoxide (CO).

### Final Answer:
Water does not produce CO when reacting with **Carbon Dioxide (CO2)**.