Chapter 8 Flashcards
1
Q
Gas Phases
A
- Gases are compressible fluids with rapid molecular motion
- Large intermolecular distances
- Weak intermolecular forces
2
Q
Barometer at High Altitude
A
- Atmospheric pressure lower
- Column falls
3
Q
Barometer Under Water
A
- Hydrostatic and atmospheric pressure exerted
- Column rises
4
Q
STP
A
T = 273 K (0˚C)
P = 1 atm
5
Q
Ideal Gas Law
A
PV = nRT
6
Q
Density of a Gas
A
p = m/V = PM/RT
7
Q
Aogadro’s Principle
A
n1/V1 = n2/V2
8
Q
Boyle’s Law
A
P1V1 = P2V2
9
Q
Charle’s Law
A
V1/T1 = V2/T2
10
Q
Gay-Lussac’s Law
A
P1/T1 = P2/T2
11
Q
Henry’s Law
A
[A] = k * P
[A]1/P1 = [A]2/P2=k
12
Q
Kinetic Molecular Theory
A
Assumptions: negligible volume of gas particles, no intermolecular forces, random motion, elastic collisions, proportionality between absolute temperature and energy
The average KE of a molecule of gas is directly proportional to temperature of gas in Kelvins
13
Q
Root-Mean-Square Speed
A
14
Q
Graham’s Law
A
- Gases with higher molar mass leak slower than gas with lower molar mass
- Particles with small masses travel faster than ones with large masses
15
Q
Real Gases
A
- Nonnegligible volume and attractive forces
- Deviate from ideal gases at high pressure (low volume) and low temperature
Ideal gases have paricles with no attractive forces between them
16
Q
Van der Waals Equation
A
