Unit 4: Gases Flashcards
Kinetic theory
gas is made up of small particles that…
move rapidly in straight lines
have no attractive/repulsive forces
far apart
small volumes compared to the volume of container
kinetic energies increase with increase in temp
Boyle’s Law
pressure and volume of a gas are INVERSELY related
(when T and n are constant)
Charles’ Law
Kelvin temperature and volume is directly related
(P and n are constant)
Combined Gas Law
the ratio of the product of pressure and volume and the absolute temperature of a gas is equal to a constant
Universal Gas Law
The relationship between the 4 variables: P (pressure), V (volume), n (mols), R (constant 0.0821), and T (temp)
(same as Ideal Gas Law)
Gases are…
fluids
Gas particles are in ______ and exert pressure in all directions
constant motion
gases have ___ _____
low density
STP
standard temp and pressure
0 Celsius and 1 atm
Boyle’s Law equation
P1V1 = P2V2
(T and n constant)
(volume and pressure unit does not matter)
Charles’ Law equation
V1/T1 = V2/T2
(P constant)
(has to be Kelvin, volume unit doesn’t matter)
Molar Volume
is measured at STP
22.4L for 1 mol of any gas
Ideal Gas Law
The relationship between the 4 variables: P (pressure), V (volume), n (mols), R (constant 0.0821), and T (temp)
(same as Universal Gas Law)
Ideal Gas Law equation
PV=nRT
(Needs to be in ATM and K)
Combined Gas Law equation
P1V1/T1 = P2V2/T2
