Ideal Gas Equation
Chapter Name : States Of Matter |
Sub Topic Code : 102_11_05_07_02 |
Topic Name : Ideal Gas Equation |
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Sub Topic Name : Dalton's Law Of Partial Pressures |
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Introduction
Total pressure exerted by a mixture of non-reactive gases is equal to the sum of the partial pressure of each gas. In a mixture of gases, the pressure exerted by each individual gas is called its partial pressure.
Pre-Requisites:
Partial pressure, volume, gas, temperature,
Activity:
Air which surrounds us is a mixture of Oxygen, carbon di-oxide and nitrogen. The pressure of air is therefore the sum of the partial pressure of these gases.
Real Life Question:
How do you get the pressure of air which surrounds us?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Partial pressure | In a mixture of gases, the pressure exerted by each individual gas is called its partial pressure. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Pressure gauge | Check out the changes in pressure as u go up a mountain. |
Real life uses :
Describing meteorological phenomena, rain, hurricane, exchange of oxygen and carbon-dioxide inside the heart.
Places to visit :
A mountain, check how the pressure changes as you go up the hill or mountain.
Practical examples around us
| Examples | Explainations |
|---|---|
| The state of a gas changes with height, heat | The variables describing the state of a gas change with location. E.g. the pressure of a gas changes with height. At higher altitudes the atmospheric pressure is low. If the temperature is increased, the pressure increases |
What you learn in Theory:
Total pressure exerted by a mixture of non-reactive gases is equal to the sum of the partial pressure of each gas. In a mixture of gases, the pressure exerted by each individual gas is called its partial pressure.
What you learn in Practice:
Total pressure of any system, is measured by adding up all the partial pressure of the mixture of gases in that system.