Use average bond enthalpies (linked above) to calculate the enthalpy change for the following gas-phase reaction. 2CO(g) + 2NO(g) 2CO2(g) + N2(g) To analyze the reaction, first draw Lewis structures for all reactant and product molecules. ΔHreaction = kJ
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.
Use average bond enthalpies (linked above) to calculate the enthalpy change for the following gas-phase reaction.
2CO(g) + 2NO(g) 2CO2(g) + N2(g)
To analyze the reaction, first draw Lewis structures for all reactant and product molecules.
ΔHreaction = kJ
![**Use average bond enthalpies (linked above) to calculate the enthalpy change for the following gas-phase reaction.**
\[ 2\text{CO(g)} + 2\text{NO(g)} \rightarrow 2\text{CO}_2\text{(g)} + \text{N}_2\text{(g)} \]
To analyze the reaction, first draw Lewis structures for all reactant and product molecules.
- **Include all valence lone pairs in your answer.**
- **Draw the reaction using separate sketchers for each species. One molecule per sketcher, please.**
- **Separate multiple reactants and/or products using the + sign from the drop-down arrow.**
- **Separate reactants from products using the → symbol from the drop-down menu.**
- **If you have to draw H₂, draw H-H.**
**ChemDoodle Sketcher Instructions:**
- The sketcher provides tools to draw molecules, including various bonds, shapes, and atom symbols. Use these to draw the Lewis structures by arranging atoms and bonds appropriately.
- Use the symbols and tools provided to modify and arrange your structure.
**ΔH\(_{\text{reaction}}\) = [ ] kJ**
**Diagram Description:**
The image contains a ChemDoodle tool interface for drawing chemical structures. It includes various buttons for bonds, atom symbols, rings, and other molecular features. Use this interface to sketch the molecular structures required for the given reaction.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F655a194b-6dad-4a12-a87f-e02d1f70a290%2F0f1e679b-f2fe-45b9-8be1-e89eb22ce1dd%2Fdip1daf_processed.jpeg&w=3840&q=75)
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