What is the following diagram representing? Energy of products Activation energy Heat of Energy of reaction reactants Progress of reaction exothermic reaction, heat is released endothermic reaction, heat is absorbed exothermic reaction, heat is absorbed endothermic reaction, heat is released Energy
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.
![**What is the following diagram representing?**
The diagram is an energy profile of a chemical reaction, showing how energy changes during the progress of a reaction.
- **Y-axis:** Energy
- **X-axis:** Progress of reaction
- **Energy Levels:**
- **Energy of reactants:** Initial energy level.
- **Activation energy:** The peak energy required to initiate the reaction.
- **Energy of products:** Final energy level.
- **Heat of reaction:** Difference in energy between reactants and products.
- **Arrow and Labels:**
- An upward arrow on the left represents energy.
- A rightward arrow at the bottom labeled "Progress of reaction" indicates the direction of the reaction from reactants to products.
The diagram represents an exothermic reaction where energy is released, as shown by the energy of the products being lower than the energy of the reactants.
**Answer Options:**
- [●] Exothermic reaction, heat is released
- [○] Endothermic reaction, heat is absorbed
- [○] Exothermic reaction, heat is absorbed
- [○] Endothermic reaction, heat is released
The correct answer is selected: **Exothermic reaction, heat is released.**](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd0e3b137-93c3-4f8a-ba86-2ec6c73db472%2F8fea1aa2-c7b0-4372-a06b-73719de04960%2Ff56oqb_processed.jpeg&w=3840&q=75)
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