PPT-1 Gases

Chapter 5 Copyright  The McGrawHill Companies Inc  Permission required for reproduction or display 2 Characteristics of Gases Gases expand to fill any container random motion no attraction. The most reactive of these gases are chlorine monoxide ClO bromine monoxide BrO and chlorine and bromine atoms Cl and Br These gases participate in three prin cipal reaction cycles that destroy ozone Cycle 1 Ozone destruction Cycle 1 is illustrated AL LHOCK WAVES CSCL 20D Unclas ASA H112 32570 VELOCITY LAG OF SOLID PARTICLES IN OSCILLATING GASES AND IN GASES PASSING THROUGH NORMAL SHOCK WAVES by Barry R Maxwell and Richard G Seasholtz Lewis Research Center Cleveland Ohio 44135 NATIONAL AERONAU Diffusion plus Convection. ).  . Molecular Diffusion in Gases. Equimolar. . Counterdiffusion. A. B. B. A.  .  . In terms of mole fraction, . Molecular Diffusion in Gases. Uni. -component Diffusion. Microscopic to Macroscopic. Macroscopic vs. Microscopic. Macroscopic means from the big picture or from far away.. This means what we can see with the naked eye.. Microscopic means from close up or on a small scale.. Chemistry—2. nd. semester. Properties. All gases share some physical properties:. Pressure (P). Volume (V). Temperature (T). Number of moles (n). These properties combine to describe the behavior of gases using the “gas laws”. ATS 150. Lecture 5. Please read Chapter 4 . in Archer Textbook. Gases. Gases are made of moving . molecules separated by empty space. Kinetic energy of molecular motion is proportional to temperature . The Kinetic-Molecular Theory of Matter. Gases. Behavior of Atoms. Kinetic-molecular theory. .  . based on the idea that particles of matter are always in motion. Can be used to explain the properties of solids, liquids, and gases in terms of the energy of the atoms and the forces that act between them. 2. Gas Laws. We will examine the quantitative relationships, or . empirical laws. , governing gases. . Basically, we will learn about equations that are available to calculate P, V, T, & n for gases. . The SI unit of pressure is the . pascal. (Pa).. . One . standard atmosphere (. atm. ). is the pressure required to support 760 mm of mercury in a mercury barometer at 25°C. . 13.1. 13.1. 13.1. 13.1. 4. and CO. 2. ) is dissolved in a catalyst made of palladium (. Pd. ) and zirconium (. Zr. ) to be converted into useful fuel (CO and H. 2. ).. Publication about this research: N. . Köpfle. , T. . Götsch. Behavior of Gases Chapter 3.2 Behavior of Gases What behaviors do gases display? Do they behave the same all the time? What variables are involved with gas behavior? Variables Pressure – the amount of collisions between gas particles and walls of the container (balloon). Measured in kilopascals ( The particles are far apart.. The particles move very fast.. The particles have no attraction nor repulsion for each other.. The fact that they have no definite shape or volume – they take the shape of the container.. Kinetic Molecular Theory of Gases. This is the six point model that is used to explain the behavior of gases. Points of the Kinetic Molecular Theory. 1. Gases are composed of atoms or molecules that have mass. Transport Solutions for Gases Non-flammablecryogenic gasesFlammable