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arabera ALLENE WIBISONO 2 years ago

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Atmospheric Chemistry

In the study of gases, several fundamental laws and principles govern the behavior and properties of gas particles. Kinetic Molecular Theory explains that gas particles are in constant motion, and their kinetic energy is directly related to temperature.

Atmospheric Chemistry

Atmospheric Chemistry

States of matter

Gas
Shape of container

Lots of space

Little attraction

Liquid
Fixed volume

Can flow to different places

Somewhat strong attraction

Solid
Fixed shape, volume, position

Strong attraction

Dalton’s particle model
Idea of atoms

The properties

The states of matter

Partial Pressures

Dalton’s Law of partial pressures
Total pressure

The sum of each individual gas pressures

Ptotal = P1 + P2 + P3….

Pgas = proportion x ptotal

Atmosphere
Nitrogen, oxygen, argon
Specific pressure of gas
Ideal gas mixture

Kinetic Molecular theory

All particles
Ideal gas behaviour

Not true

Particles
Elastic collisions

Conserved

Small gas particles

Large number of particles

Kinetic energy
Gas behaviours
Molecular motion
Brownian motion discovery
Particle collisions

Gas Laws

Combined Gas Law

P1 x V1 / T1 = P2 x V2 /T2

Constant

Number of moles

Large quantities

Atoms or molecules

Container

Litres

Speed of motion

Kelvin

Force exerted

Gas particles

Surface

KiloPascals

Physical constant
Molar gas constant
Standard conditions
Fixed variables

Temperature and pressure

Compare different sets of experiments

Quantitative relationships
Gas variables

Physical property

Gasses

Ideal Gas Law
Hypothetical gas properties

PV=nRT

Charle’s Law

V1/T1=V2/T2

Gay Lussac’s Law

Temperature

P1/T1=P2/T2

Boyle’s Law
Pressure

Inverse operation

P1xV1=P2xV2

Avogadro’s law
Volume

Number of particles

P1/n1=P2/n2