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Contents

*- Properties of &ases+ &as Pressure*-2 #he "iple &as )a.s

*-/ Coinin1 the &as )a.s+

#he !deal &as Euation and#he &eneral &as Euation

*-3 (pplications of the !deal &as Euation

*-4 &ases in Cheical $eactions*-* i5tures of &ases

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Contents

*-* i5tures of &ases*-7 6ineticolecular #heory of &ases

*-8 &as Properties $elatin1 to the

6ineticolecular #heory

*-9 'onideal :$eal; &ases

Focus On Earths Atmosphere

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#he 1aseous states of three halo1ens

P> ? constant

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Relating Gas Volume and Pressure Boyles Law. #he

volue of a lar1e irre1ularly shaped, closed tan can edeterined< #he tan is first evacuated and then connected to a

40

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EXAMPLE 6-4

P>? P2>2 >2? P>P2

? *93 ) >tan? *33 )

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CharlesFs )a.

Charles 787&ay-)ussac 802

> # > ? #

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"tandard #eperature and Pressure

&as properties depend on conditionsflas? H2=dH2= ? :/8

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Use the Gas Equation:

P> ? n$# P> ?

$# ?

P>$#

?:0

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&as Densities

P> ? n$# and d ? >

P>?

$#

P

$#>

? d ?

, n ?

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*-4 &ases in Cheical $eactions

"toichioetric factors relate 1as uantities to

uantities of other reactants or products'

/P

2u

umis the odal speed

uavis the siple avera1e

urms

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Pressure

/$#u

u/$#

u-$#/

u-/

,

P>

r-s

2

2

(

2(

(ssue one ole+

P>?$# so+

$ ? +

$earran1e+

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Distriution of olecular "peeds

/$#u r-s

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Deterinin1 olecular "peed

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#eperature

:#;$

2

/e

e

/

2$#

;u-2

,:/

2u-/

,P>

(

22

(

$

$

odify+

P>?$# so+

"olve for e+

(vera1e inetic ener1y is directly proportional to teperatureQ

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*-8 &as Properties $elatin1 to the

6inetic-olecular #heory

Diffusion

'et rate is proportional toolecular speed