Chapter 10 Flashcards
Kinetic Molecular Theory
explains the behavior of gases based on the motion of their particles
what is a gases average kinetic energy proportional to?
absolute temp
what kind of collisions do gases engage in?
elastic
what changes a gases volume?
temp and pressure
effusion
gas leaking through small holes from a high pressure are to a low pressure area
u
speed of molecules
n
number of moles
smaller mass=
higher speed
atmospheric pressure
pressure exerted due to gravity acting on air above Earth’s surface
1 atm=
101.325 Pa
1atm=
1.01325 bars
1 atm==
760 mmHg
absolute temperature
temp expressed on the Kelvin scale whose zero value is absolute zero
ideal gas
gas whose behavior is predicted by the linear relations defined by the combined gas law
STP Temp
273K
STP Pressure
1 atm
at STP 1mol of gas has a V of…
22.4L
molar volume=
v/n
density of gas
MP/RT
low molar mass means…
low density
what remains constant according to Boyle’s law?
Temp and number of moles
Boyle’s law equation
PV=PV
what remains constant according to Charles Law?
Pressure and number of moles
Charles Law equation
V/T=V/T
what remains constant according to Amontom’s Law?
number of moles and volume
Amontom’s law equation
P/T=P/T
what is constant according to the combined gas law?
number of moles
Combined Gas Law equation
PV/T=PV/T
ideal gas equation
PV=nRT
R
0.08206
partial pressure
pressure of individual gases in a mixture
what finds partial pressure?
P1=xPtotal
Steps to Find Partial Pressure
- Convert it to moles
- Add everything together
- Divide moles by total
- Make sure everything equals 1
what is the solubility of gases dependent on?
Temp and Pressure
As solubility increases
pressure increases
as solubility decreases
temp increases
