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
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
![### 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.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Faa11fcfc-11f7-448e-9db2-5b5a3dd5c606%2F41dc0eb3-64c6-4ca4-80e8-41a065a6ca4b%2Ffxr7ft_processed.jpeg&w=3840&q=75)
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