gas laws Flashcards
basic properties of gases
- Gases can be compressed • Gases expand when less pressure is applied • Gases can be mixed • Gases exert a constant pressure on its container walls • Gases have low densities.
kinetic properties of gases?
Gases always move in straight lines and in constant
motion
• Gases are widely spaced
• Gases collide with each other and with their
container walls without loss of kinetic energy
• Gases behave as individual particles, attraction
between them is negligible
• The actual volume of gases are insignificant
compared to the space they previously occupy
kinetic energy for gases formula and the units
1/2mv^2 = KE
v in m/s
m in grams
KE in joulees
what is volume
the amount of space something takes up
several different units used for volume
ml = cm^3
L=1000ml = 1000cm^3
formula for pressure =
force/area
units for pressure
nm-2 or newtons/sqm pascal or pa (just remember that 1pa = 1n/m^2) kilopascal or kpa (1000n/m^2) atm or atmosphere bar or bar millimeters of mercury or mmhg
what is daltons law of pressure
total pressure of gas = pgas1 + pgas2 + pgas 3 …
proportional to the no. of moles of each gas, called partial pressure
Boyle’s Law
p1v1=p2v2
p being pressure and v being volume
pressure and volume are inversely proportional to a constant k
Charle’s Law
V/T = k V1/T1 = V2/T2
gay lusccas law
p = K T P1/T1 = P2/T2
combined gas law
PV/T = K where K is a constant and the gases must be the same to use this law
avogadros law
equal volumes of gases contain equal numbers of moles
V1/N1=V2/M
