Determine the energy change for the reaction Li (s) + ½ Cl2 (g) → LiCl (s) from the following data: Lattice energy of LiCl = −861 kJ/mol Energy to vaporize Li = 159 kJ/mol Ionization energy of Li = 520 kJ/mol Cl2 bond energy: 240 kJ/mol Electron affinity of Cl: −349 kJ/mol I know the answer is -411 kJ/mol I want to know how to solve it and get to the answer
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.
Determine the energy change for the reaction Li (s) + ½ Cl2 (g) → LiCl (s) from the following data:
Lattice energy of LiCl = −861 kJ/mol
Energy to vaporize Li = 159 kJ/mol
Ionization energy of Li = 520 kJ/mol
Cl2 bond energy: 240 kJ/mol
I know the answer is -411 kJ/mol I want to know how to solve it and get to the answer.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images