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.
The balanced net ionic chemical equation between iodine (I2) and sodium thiosulfate (Na2S2O3) represents a redox (reduction-oxidation) reaction that occurs when these substances are mixed in an aqueous solution. This reaction showcases the transfer of electrons between the species involved.
Iodine is a diatomic molecule (I2) and is typically a dark purple solid. Sodium thiosulfate, Na2S2O3 , is a compound commonly used in chemical experiments. When these two substances come into contact in an aqueous solution, they undergo a chemical transformation.
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