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Gas Law
This article explains about the gas law
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Application of these laws will also be explained
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Introduction
Matter exist in three forms i
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liquids solids and gases
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Gas as matter has got properties
among them is that gases have indefinite volume, indefinite shape and it has got definite mass
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Likewise, if the volume of a gas is reduced then
the pressure increase only when the absolute temperature
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Boyle`s Laws
It deals with the relationship between pressure and volume of a fixed mass of a gas when
temperature is kept constant
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

The pressure in gases is as a result of collision of the gas molecules with the walls of a
container containing the gas
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vvvv
pp

pp



This means that: Vα1/p where V ~volume, P~pressure
:
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i
P2V2=K………
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P1V1=P2V2



A graph of pressure against 1/v is a straight line graph through the origin
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In the law Charles came up with a conclusion that there is a
relationship between temperature and volume when the absolute temperature is kept constant
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V

V VV

TTT

T

This means that VαT
i
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Ideal gas-It is a gas whose volume is theoretically zero
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Law
The law deals with the variation in the volume of a fixed mass of a gas with respect to changes in
temperature and pressure
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i
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VαT/P Introducing constant K in the expression
V=KT/P
PV=KT
PV/T=k
When P1 changes to P2 , V1 to V2and T1 to T2 then:
V1P1/T1=V2P2/T2 (this is an ideal gas equation)
Applications of Gas Laws


Inflating tires, balls and balloons depends on the prevailing temperature conditions
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

Regulations of pressure in an aircraft for comfortable in flight environment at high altitude
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It is clear that when temperature
is increased and the volume is kept constant pressure is increased
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This is due to increased kinetic energy which in turn
exerts pressure on the walls of the containers they are held in
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