LOSCIOU In carbon combustion, the oxidation of solid carbon to produce carbon monoxide is represented below: noi olimondogyd ad ot 1100qan div not 2C(s)+O2(g)→2CO(g) Use the following reaction enthalpies to find the enthalpy of the above reaction. C(s)+O2(g)>CO2(g) AH=-394 kJ 2CO2(g) 2C0(g)+O2(g) AH=+283 kJ aten ai senoni blot- noitase lo stm odt ni the ligeid sttete s

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### Understanding Enthalpy Changes in Carbon Combustion

In carbon combustion, the oxidation of solid carbon to produce carbon monoxide is represented by the reaction:

\[ 2\text{C}(s) + \text{O}_2(g) \rightarrow 2\text{CO}(g) \]

To find the enthalpy (\( \Delta H \)) of the above reaction, use the following reaction enthalpies:

1. \[ \text{C}(s) + \text{O}_2(g) \rightarrow \text{CO}_2(g) \]  
   \( \Delta H = -394 \text{ kJ} \)

2. \[ 2\text{CO}_2(g) \rightarrow 2\text{CO}(g) + \text{O}_2(g) \]  
   \( \Delta H = 283 \text{ kJ} \)

### Analysis:

- The first equation shows the complete combustion of solid carbon to form carbon dioxide, with an enthalpy change of -394 kJ, indicating an exothermic reaction.
- The second equation involves the conversion of carbon dioxide to carbon monoxide, releasing oxygen and has an enthalpy change of 283 kJ, indicating an endothermic process.

### Table of Reaction Enthalpies:

| Reaction Enthalpy | Value (kJ) |
|-------------------|------------|
| C(s) to CO2(g)    | -394       |
| CO2(g) to CO(g)   | 283        |

Use these values to calculate the enthalpy change for the combustion of carbon to carbon monoxide. Make sure to apply Hess's Law for finding the net enthalpy change in the given reaction sequence.
Transcribed Image Text:### Understanding Enthalpy Changes in Carbon Combustion In carbon combustion, the oxidation of solid carbon to produce carbon monoxide is represented by the reaction: \[ 2\text{C}(s) + \text{O}_2(g) \rightarrow 2\text{CO}(g) \] To find the enthalpy (\( \Delta H \)) of the above reaction, use the following reaction enthalpies: 1. \[ \text{C}(s) + \text{O}_2(g) \rightarrow \text{CO}_2(g) \] \( \Delta H = -394 \text{ kJ} \) 2. \[ 2\text{CO}_2(g) \rightarrow 2\text{CO}(g) + \text{O}_2(g) \] \( \Delta H = 283 \text{ kJ} \) ### Analysis: - The first equation shows the complete combustion of solid carbon to form carbon dioxide, with an enthalpy change of -394 kJ, indicating an exothermic reaction. - The second equation involves the conversion of carbon dioxide to carbon monoxide, releasing oxygen and has an enthalpy change of 283 kJ, indicating an endothermic process. ### Table of Reaction Enthalpies: | Reaction Enthalpy | Value (kJ) | |-------------------|------------| | C(s) to CO2(g) | -394 | | CO2(g) to CO(g) | 283 | Use these values to calculate the enthalpy change for the combustion of carbon to carbon monoxide. Make sure to apply Hess's Law for finding the net enthalpy change in the given reaction sequence.
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