Gas Laws Flashcards
Kinetic theory of matter
KE=1/2m x v²
Standard Pressure
1 atm, 760mmhg, 1 bar, 14.7 lb/in²
Standard Temperature
0*C, 32F, 273K
Triple Point
Point where a substance can exist in all 3 phases simultaneously due to extreme pressures and temperatures
Density is always at
stp 22.4L
Define Vapor pressure
ability of a liquid to go to a gas
VP increases
Evaporation increases
VP decreases
Evaporation decreases
Temperature and pressure have what type of effect
little effects on the volume of solids and liquid but HUGE effect on volume of gases
H2O AP increases then e and bp will…
Evaporation decreases and Boiling point increases
H2O AP decreases then e and bp will..
Evaporation increases and boiling point decreases
Law of partial pressures
Tp = p1 + p2
Grams law says
lighter gases diffuse faster and heavy gases diffuse slower
rate of diffusion
inversely proportion to the square root of their molecular masses
molecular mass
mass of 1 mole
Eudiometer
Gas collecting tube
barometer
measures pressure
what is vapor pressure of water
pressure that water adds to the gas because of evaporation
Dynamic equilibrium
evaporation never stops, water condensation occurs, the liquid will be more but exchange rate will be same which is called dynamic equilibrium
precipitation
Precipitates are insoluble ionic solid products
salt example for dynamic equilibrium
even though it doesn’t look like salt is dissolving it is still dissolving and precipitating the rate will be the same
Ideal gas law
PV=nrT
r
.0821
atm x L
----------
mol x K
heat
total kinetic energy
temperature
average kinetic energy
Henrys law soda example
increasing pressure for more carbonation
why is kelvin scale important
kelvin scale is proportional to kinetic energy
explain concept behind the kinetic thoery
mass and volume are inverse proportions, lighter gases move faster (particles)
temperatures effects on the volume and kinetic energy of a gas
more heat –> more volume
pressure effects on the volume and kinetic energy of a gas
more pressure –> less volume
how is gas pressure measured using an eudiometer
i dont know
mine-shaft man
less air pressure means lower boil point, food cooks faser
