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Ch.13 - Solutions & Their Properties
McMurry - Chemistry 8th Edition
McMurry8th EditionChemistryISBN: 9781292336145당신이 사용하는 게 아니라요?교과서 변경
모든 교과서McMurry 8th EditionCh.13 - Solutions & Their Properties문제 37
13장, 문제 37

Why do ionic substances with higher lattice energies tend to be less soluble in water than substances with lower lattice energies?

검증된 단계별 안내
1
Step 1: Understand the concept of lattice energy. Lattice energy is the energy required to separate one mole of an ionic solid into its gaseous ions. It is a measure of the strength of the forces holding the ions together in the solid.
Step 2: Recognize the relationship between lattice energy and solubility. Solubility of an ionic compound in water depends on the balance between lattice energy and the hydration energy (the energy released when ions interact with water molecules).
Step 3: Analyze the effect of high lattice energy. When an ionic compound has a high lattice energy, it means that a large amount of energy is required to break the ionic bonds in the solid. This makes it more difficult for the compound to dissolve in water.
Step 4: Consider the role of hydration energy. For an ionic compound to dissolve, the hydration energy must be sufficient to overcome the lattice energy. If the lattice energy is much higher than the hydration energy, the compound will be less soluble.
Step 5: Conclude the relationship. Ionic substances with higher lattice energies tend to be less soluble in water because the energy required to break the ionic bonds is not sufficiently compensated by the energy released during hydration, making dissolution energetically unfavorable.

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Lattice Energy

Lattice energy is the amount of energy released when gaseous ions combine to form an ionic solid. It is a measure of the strength of the forces between the ions in an ionic compound. Higher lattice energy indicates stronger ionic bonds, making it more difficult for the solid to dissociate into its constituent ions in a solvent, such as water.
추천 영상:
가이드 코스
00:49
Lattice Energy

Solubility

Solubility refers to the ability of a substance to dissolve in a solvent, forming a homogeneous solution. For ionic compounds, solubility is influenced by the balance between lattice energy and the energy released when ions interact with solvent molecules. If the lattice energy is too high compared to the solvation energy, the compound will be less soluble.
추천 영상:
가이드 코스
00:28
Solubility Rules

Hydration Energy

Hydration energy is the energy released when ions are surrounded by water molecules. This process helps to stabilize the ions in solution. For an ionic substance to dissolve, the hydration energy must be sufficient to overcome the lattice energy. If the lattice energy is significantly greater, the compound will not dissolve well in water.
추천 영상:
가이드 코스
02:04
Ionic Hydrates Naming
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