Unit 4 Chemistry

Volume of Kinetic Molecular Theory

the size of a gas particle is small enough to be negligible compared to the volume of a container

Temperature of Kinetic Molecular Theory

as the temperature increases, the molecules moving at higher velocities increases

Kinetic Molecule Theory

uses data of real gases to predict how ideal gases would behave if they existed

1 atm in pascal

101325

1000pa in KPa

1

Forces of Kinetic Molecular Theory

there are no repulsive or attractive forces between gases and walls of the container

elastic

not repellant or attractive

1 bar in KPa

100

6895 pascals in pounds per square inch

1

1 atm in mmHG

760

1 atm in torr

760

What happens to gas particles when they’re cold

they attract each other

What happens to gas particles when they’re hot

they repel each other

Collisions and Movement Postulate of Kinetic Molecular Theory

particles of gas are in constant motion and collide with both one another and the container

Pressure Postulate of Kinetic Molecular Theory

pressure in a container are cause dby particle collisions

Synonym for non-ideal gases

real gases

How do non-ideal gases work

opposite of ideal gases

temperature

average kinetic energy

get a real impression of kinetic molecular theory

okay

Pressure and Meters comparasons

Pa m3 / KPa dm3

1 dm³

1 L

Gas constant

8.314 Jmol-1 x K-1

Boyle’s Law Variables

V P

Gay Lussac’s Law Variables

P T

Avogadro’s Law Variables

V N

Charles’ Law Variables

V T

Boyle’s Law Formula

P1V1=P2V2

Gay-Lussac’s Law

as the temp of gas particles increases, pressure increases

Mean Kinetic Energy of Gas =

absolute temperature of gas

1 L in decimeters cubed

1 dm3

STP

0C 100 KPa

SATP

25C 100KPa

When are real and ideal gases most divergent

low temperature high pressure

Pressure Formula Units

Pa/psi/atm, N/lb, m2/in2