CHM 121 Chapter Notes - Chapter 10: Real Gas, Sodium Azide, Vtk
7 Jun 2018
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10.1 Gases and Gas Pressure
● Gas mixtures are homogeneous and compressible
● Pressure=
● Conversions:
○ 1 atm= 760 mmHg
○ 1 torr= 1 mmHg
○ 1 bar= 1105Pa
○ 1 atm= 101,325 Pa
10.2 The Gas Laws
● P= pressure
● T= temperature
● V= volume
● n= number of moles
● Boyle’s Law: the relationship between gas volume and pressure; the volume of a fixed
amount of gas at a constant temperature varies inversely with its pressure; if the gas
pressure is doubled, the volume is halved; if the pressure is halved, the gas doubles
○ PV=k at constant n and T
● Charles’s Law: the relationship between gas volume and temperature; the volume of a
fixed amount of an ideal gas at a constant pressure varies directly with its absolute
temperature; if the gas temperature in kelvins is doubled, the volume is doubled; if the
gas temperature is halved, the volume is halved
○ V/T=k at constant n and P
● Avogadro’s Law: the relationship between volume and amount; the volume of an ideal
gas at a fixed pressure and temperature depends only on its molar amount; if the amount
of the gas is doubled, the gas volume is doubled; if the amount is halved, the volume is
halved
○ V/n=k at constant T and P
10.3 The Ideal Gas Law
● Ideal gas law: describes how the volume of a gas is affected by changes in pressure,
temperature, and amount
●
or
● R is the gas constant and is the same for all gases
○ 008206
● Standard Temperature and Pressure (STP) for Gases:
○ T= 0 Celsius (273.15 K)
○ P= 1 atm
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Document Summary
Ideal gas law: describes how the volume of a gas is affected by changes in pressure, temperature, and amount. R is the gas constant and is the same for all gases. Standard temperature and pressure (stp) for gases: The reaction used in the deployment of automobile airbags is the high-temperature decomposition of sodium azide, nan3, to produce n2 gas. How many liters of n2 at 1. 15 atm and. = =(cid:4666)1. 04 (cid:3040)(cid:3042)(cid:3039)(cid:4667)(cid:4666)0. 08206(cid:3261) (cid:3288)(cid:3260) (cid:3288)(cid:3287)(cid:4667)(cid:4666)3. 03 (cid:3012)(cid:4667) (cid:4666)1. 15 (cid:3047)(cid:3040)(cid:4667) 10. 5 mixtures of gases: partial pressure and dalton"s law. Dalton"s law of partial pressures: the total pressure exerted by a mixture of gases in a container at constant v and t is equal to the sum of the pressures of each individual gas in the container. (cid:1839)(cid:1867)(cid:1864)(cid:1857) (cid:1858)(cid:1867)(cid:1866) (cid:4666)(cid:4667)= (cid:3040)(cid:3042)(cid:3039)(cid:3032)(cid:3046) (cid:3042)(cid:3033) (cid:3042)(cid:3040)(cid:3043)(cid:3042)(cid:3041)(cid:3032)(cid:3041)(cid:3047) (cid:3047)(cid:3042)(cid:3047)(cid:3039) (cid:3040)(cid:3042)(cid:3039)(cid:3032)(cid:3046) (cid:3041) (cid:3040)(cid:3047)(cid:3048)(cid:3045)(cid:3032) A gas consists of tiny particles, either atoms or molecules, moving about a random.
