Intermolecular Forces
Chapter Name : States Of Matter |
Sub Topic Code : 102_11_05_02_04 |
Topic Name : Intermolecular Forces |
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Sub Topic Name : Dipole Induced Dipole Forces |
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Introduction
• Attractive forces that occur between a polar molecule having permanent dipole and molecules lacking permanent dipole are called dipole-induced dipole forces. Induced dipole moment depends upon the dipole moment present in the permanent dipole and the polarisability of the electrically neutral molecule. • Larger molecules can be easily polarized. • High polarisability increases the strength of attraction.
Pre-Requisites:
molecule, dipole, ion, polarize
Activity:
Fish breath inside water using the oxygen dissolved in the water.
Real Life Question:
What makes oxygen dissolve in water?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Dipole-induced dipole forces | Attractive forces that occur between a polar molecule having permanent dipole and molecules lacking permanent dipole. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| aquarium | In an aquarium water is oxygenated by bubbling oxygen gas in it. |
Real life uses :
Dissolution of oxygen inside water.
Places to visit :
Aquarium, pond, lake
Practical examples around us
| Examples | Explainations |
|---|---|
| Oxygen dissolving in water | Oxygen a neutral molecule dissolves in water (a polar molecule) by the formation of dipole induced dipole forces between them. |
What you learn in Theory:
Dipole induced dipole forces are formed when a polar molecule polarizes a neutral molecule.
What you learn in Practice:
Dipole induced dipole forces allow oxygen to mix with water.