Rank the following ionic compounds by the magnitude of their lattice energy. Rank from highest to lowest magnitude of lattice energy. ► View Available Hint(s) MgO Highest magnitude Na₂O LiCl Na₂S The correct ranking cannot be determined. BeO Reset Help Lowest magnitude
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.
![Part B
Given the following thermodynamic data, calculate the lattice energy of CaBr2 (s).
Term
Express your answer in kilojoules per mole to four significant figures.
View Available Hint(s)
AHlatt =
Value
AH [CaBr2 (s)] -675 kJ/mol
AH [Ca(g)]
178 kJ
AH [Br(g)]
112 kJ
I₁ (Ca)
590. kJ
I2 (Ca)
1145 kJ
EA(Br)
-325 kJ
VE ΑΣΦ
?
kJ/mol](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F77ff0dc1-7282-4fa0-94cd-a91857c24dd6%2Fd7329d28-cde3-4f79-ab86-189a711d4ee1%2Fjlfz4sk_processed.jpeg&w=3840&q=75)
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