Which statement about fusion enthalpy and condensation enthalpy is correct? O a. There is no general relationship between these two quantities and the values depend on the substance involved. O b. The heat of condensation is equal in magnitude but opposite in sign when compared to the fusion enthalpy. O c. The fusion enthalpy represents the heat released when a gas becomes a liquid, and the heat of condensation represents the heat required for a liquid to become a gas. O d. The fusion enthalpy is always less than the heat of condensation. O e. The fusion enthalpy is exactly equal to the heat of condensation.
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.
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