Enthalpies Of Different Types Of Reactions
Chapter Name : Thermodynamics |
Sub Topic Code : 102_11_06_05_05 |
Topic Name : Enthalpies Of Different Types Of Reactions |
|
Sub Topic Name : Lattice Enthalpy |
|
Introduction
• The lattice enthalpy of an ionic compound is the enthalpy change which occurs when one mole of an ionic compound dissociates into its ions in gaseous state.
Pre-Requisites:
Enthalpy, lattice structure, energy, exothermic, endothermic
Activity:
Salt dissolves easily in hot water.
Real Life Question:
Why does salt dissolve easily in water when water is hot?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Lattice enthalpy | • The lattice enthalpy of an ionic compound is the enthalpy change which occurs when one mole of an ionic compound dissociates into its ions in gaseous state. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| stick | Energy is required to break a stick. |
Real life uses :
Fast Dissolving salt in hot water requires heat.
Places to visit :
Dissolving salt in hot water.
Practical examples around us
| Examples | Explainations |
|---|---|
| Dissolve salt in hot water | Dissolving salt in hot water is easier as the enthalpy of solution is high and salvation is an endothermic process. |
What you learn in Theory:
• Enthalpy of solution of a substance is the enthalpy change when one mole of it dissolves in a specified amount of solvent.
What you learn in Practice:
Energy is required to break bonds.