Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 123. kJ during a certain chemical reaction, which is carried out at a constant pressure. Furthermore, by carefully monitoring the volume change it is determined that -161.kJ of work is done on the mixture during the reaction. This reaction is exothermic V [ Select ] During the reaction, the volume of the mixtur did not change decreased The change in energy of the gas mixture durir increased
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.
![Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 123. kJ
during a certain chemical reaction, which is carried out at a constant pressure. Furthermore, by
carefully monitoring the volume change it is determined that -161.kJ of work is done on the
mixture during the reaction.
This reaction is exothermic
V [ Select ]
During the reaction, the volume of the mixtur
did not change
decreased
The change in energy of the gas mixture durir
increased](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F38a9992d-9c05-40da-9474-aaafff450dc4%2Fd4133a16-876d-4323-9c82-1f634e643250%2Fc8jqig_processed.jpeg&w=3840&q=75)
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