Presented by Yip Kam Haw Paul

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Presentation 11 (2-3)

• Presented by Yip Kam Haw Paul
• (6S0 - 00)
• 2.2 Ideal Gas Equation

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2.2 Ideal Gas Equation
What is ideal gas ?

• A gas whose behaviour obeys ideal gas equation
  perfectly.

PV nRT P Pressure V Volume N no. of
mole T Temp. in Kelvin Scale R
(Ideal/Universal) gas constant
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2.2 Boyles Law
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2.2 Boyles Law
Boyles Law The Volume of a given mass of a gas
is inversely proportional to the pressure exerted
on it at constant temperature.
PV constant
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2.2 Boyles Law
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2.2 Charles Law
V µ T
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2.2 Charles Law
Charles Law The volume of a given mass of a
gas is directly proportional to the absolute
temperature (temperature in Kelvin) at constant
pressure.
V µ T
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2.2 Charles Law
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2.2 Derivation of ideal gas equation
Boyles Law
V µ T
Charles Law
V µ N µ n
Avogardros Law
Ideal gas relationship PV µ nT
PV nRT
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2.2 Gas constant
PV nRT R (Universal/Ideal) gas constant
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2.2 Gas constant
Convert the gas constant 8.314 JK-1mol-1 to unit
atmdm3mol-1K-1
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Example 2-10
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Example 2-11
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Example 2-12
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Check point 2-3
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Check point 2-3
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Check point 2-3
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Review
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2.2 Ideal Gas Equation
What is ideal gas ?

• A gas whose behaviour obeys ideal gas equation
  perfectly.

PV nRT P Pressure V Volume N no. of
mole T Temp. in Kelvin Scale R
(Ideal/Universal) gas constant
20
2.2 Boyles Law
21
2.2 Boyles Law
Boyles Law The Volume of a given mass of a gas
is inversely proportional to the pressure exerted
on it at constant temperature.
PV constant
22
2.2 Boyles Law
23
2.2 Charles Law
V µ T
24
2.2 Charles Law
Charles Law The volume of a given mass of a
gas is directly proportional to the absolute
temperature (temperature in Kelvin) at constant
pressure.
V µ T
25
2.2 Charles Law
26
2.2 Derivation of ideal gas equation
Boyles Law
V µ T
Charles Law
V µ N µ n
Avogardros Law
Ideal gas relationship PV µ nT
PV nRT
27
2.2 Gas constant
PV nRT R (Universal/Ideal) gas constant
28
2.2 Gas constant
Convert the gas constant 8.314 JK-1mol-1 to unit
atmdm3mol-1K-1