Which of the following enthalpies of atom combination is most likely incorrect? A) Cr(g) 0 kJ/mole B) CHCl3(g) -1433.84 kJ/mole C) I2(g) 213.68 kJ/mole D) all are likely incorrect E) none of these are likely incorrect
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.
Which of the following enthalpies of atom combination is most likely incorrect?
The enthalpy of atom combination is the enthalpy change when one mole of gaseous atoms combines to form one mole of the diatomic molecule. The enthalpy of atom combination for an element depends on various factors such as its electronic configuration, atomic size, and bond strength.
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