Gas Laws

Question 1

Boyle’s law

Answer 1

The volume and pressure of a gas are inversely proportional if the temp and amount are constant.

Question 2

Charles’s law

Answer 2

The volume and temperature of a gas are directly proportional if the amount and pressure are constant.

Question 3

Gay-Lussac’s law

Answer 3

The pressure and temp of a gas are directly proportional if the amount and volume are constant.

Question 4

Combines gas law

Answer 4

P1V1/T1 = P2V2/T2

Question 5

Avogadro’s law

Answer 5

The number of moles and volume of a gas are directly proportional if the pressure and temperature are constant.
One mole of an ideal gas at STP occupies a volume of 22.4 L.

Question 6

Dalton’s partial pressure law

Answer 6

The sum of the partial pressures of the individual gases in a gas mixture is equal to the total pressure:
Ptotal = Pa + Pb + Pc +…

Question 7

Graham’s law

Answer 7

The lower the molecular mass of a gas,
the faster it will effuse/diffuse.
R1/R2 = the square root of M1 over M2

Question 8

Kinetic molecular theory

Answer 8

Gases are small particles of negligible volume moving in a random straight-line motion, colliding with the container walls (that is the gas pressure) and with each other. During these collisions no energy is lost, but energy may be transferred from one particle to another.
The kelvin temp is proportional to the average kinetic E. There is assumed to be no attraction between the particles.