CHEM 12
Terms
undefined, object
copy deck
- Kinetic Molecular Theory
-
-gases operate like fluids
-particles in constant rapid motion
- all collisions perfectly elastic - elastic
- particles completly transfer energy
- in elastic
- incomplete energy transfer
- green house gases
- trap energy from sun
- Avogadro's Law
- equal volumes of gaseshave the same number of particles at the same temperature and pressure
- pressure
- the force exerted per unit area force/area
- Role of ozone and chlorofluorocarbons in the upper atmosphere
-
OZONE-protect atmosphere from being blown up
CHLORO- destroy the ozone - Ideal Gases
-
High pressure
Low Temperature - Real Gases
-
Low pressure
High Temperature - Boiling Point
-
A liquid boils when vapor pressure within the liquid is equal to the external pressure
atmosphere pressure=vapor pressure - Sublimation
- change of state from solid to a gas
-
relationship between:
volume, pressure - volume increases as pressure rises
-
relationship between:
temperature, pressure - increase in temp, increase in pressure
-
relationship between:
temperature, volume - increase temp, decrease volume
-
relationship between:
volume, pressure, temp - increase volume, decrease pressure and temperature
- Barometer
- instrument that measures pressure using mercury
- Volume to Volume Calculation
- use 22.4
- Gas diffusion
- area of higher concentration to area of lower concentration
- Boyles Law
-
inverse relationship between pressure and volume
P1V1=P2V2 - Temp & Pressure Law
-
Temperature and Pressure are directly proportional
P1 P2
-- = --
T1 T2 - Charles Law
-
the relationship between temperature and volume
V1 V2
-- = --
T1 T2 - Combined Gas Law
- P1V1T2 = P2V2T1
- Ideal Gas Law
-
combination of Charles', Avogadro's, and Boyles law.
PV = nRT
R = 8.314 L*kPa/mol*k - Dalton's Law
-
total pressure in a gaseous system is the sum of the individual partical pressures
PT = P1+P2+P3+P4+ECT... - Graham's Law
-
Va Mb
-- = (square root)--
Vb Ma -
Graham's Law
effusion - gas particles travel out of a small opening
-
Graham's Law
diffusion - gas traveling in open space
-
INTERPRET
Phase diagram
Normal Boiling Point - temperature at which a substance boils at STP
-
INTERPRET
Phase diagram
Critical Point - temperature and pressure at which the properties of liquids and gases become distinguishable
-
INTERPRET
Phase diagram
Triple Point - temperature and pressure at which all thress phases of a substance exists
-
INTERPRET
Phase diagram
Sublimation - solid ----> gas
-
INTERPRET
Vapor Pressure vs. temp. -
-as temp of water increases, its vapor pressure increases
-when vapor reaches external pressure it boils