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.
- Why is it important to give the physical states of the reactants and products when giving an equation ofΔH?
- If an equation for a reaction is doubled and then reversed, How is the value of ΔH changed?
- How is kinetic and potential energy differ? How are they related? Please cite an everyday situation that involves the use of potential energy and one that involves the use of kinetic energy
- State the First Law of
Thermodynamics in your own words. Cite at least one example that applies to the First Law of Thermodynamics.
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