Multiple Choice
Which statement is true about crystal lattice energy?
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11. Bonding & Molecular Structure
Lattice Energy
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Is lattice energy typically considered endothermic or exothermic?
A
Endothermic
B
It depends on the temperature
C
Neither; it is always zero
D
Exothermic
Verified step by step guidance1
Understand that lattice energy is the energy released when gaseous ions come together to form an ionic solid.
Recall that the formation of an ionic lattice from ions in the gas phase results in a release of energy, indicating an exothermic process.
Recognize that because energy is released, lattice energy is typically considered negative in sign, which corresponds to an exothermic reaction.
Note that endothermic processes require energy input, which is not the case for lattice energy formation.
Conclude that lattice energy is typically exothermic because it involves the release of energy when ions form a solid lattice.
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