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.
![**Problem Statement:**
Determine the enthalpy of vaporization, in kJ/mol, of CH₃OH if 19.0 kJ of heat is needed to vaporize 0.500 moles of CH₃OH.
**Diagram Explanation:**
To the right of the problem, there is a digital interface resembling a calculator. It features a keypad with numbers 0-9, along with buttons for basic operations (+/-, ., C, and `x 10`). There is an input box labeled "kJ/mol" where users can enter the calculated value of enthalpy. The buttons allow for computational inputs and corrections as needed.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F56c0d6f8-9f13-42b8-9b57-0cbb0f2f598f%2F6c7c9c39-a3ce-454d-b0f0-5d9b45d5bb92%2Fln5335v_processed.png&w=3840&q=75)
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