Uranium (IV) oxide is a black crystalline powder. When treated with a mixture of gaseous hydrogen fluoride and fluorine gas it forms uranium hexafluoride gas and water vapor. Write a balanced chemical equation to describe this important industrial process and use the values on appendix 4 (starting on page A21) of your textbook to calculate the enthalpy change under standard conditions (AH;xn). [numerical value only, use minus sign if needed, pay attention to the state of every substance, 3 s.f.]
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.
UF6(g): -2113 kJ/mol
UO2 (s): -1084 kJ/mol
![**Uranium (IV) oxide** is a black crystalline powder. When treated with a mixture of gaseous hydrogen fluoride and fluorine gas, it forms uranium hexafluoride gas and water vapor.
Write a balanced chemical equation to describe this important industrial process and use the values on appendix 4 (starting on page A21) of your textbook to calculate the enthalpy change under standard conditions (ΔH°rxn).
[numerical value only, use minus sign if needed, pay attention to the state of every substance, 3 s.f.]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffd14f466-2175-4b26-80f9-e0672840c669%2F87cb1bac-8f28-4151-95d1-0cfda23975d5%2Feuz5b5h_processed.png&w=3840&q=75)
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