Gases

Question 1

Effusion

Answer 1

The rate at which a gas escapes through a pinhole into a vaccum (Through a small opening)

Question 2

Gases are ideal under what conditions?

Answer 2

1. High Temperature
2. Low Pressure

Question 3

Dalton’s law

Answer 3

Mixture of gas where each gas acts independently, the total pressure is the sum of the partial pressure

(P_t= P₁ + P₂ + P₃ ….)

Question 4

Avogardro’s Law

Answer 4

At constant temp & pressure volume is directly proportional to moles

Question 5

Condition where gases are “Real”

Answer 5

1. Low temp
2. High Pressure

Question 6

Charles Law

Answer 6

At constant pressure, volume & temp are directly proportional to each other (V₁/V₂ = T₁/T₂)

Question 7

Presure of gas

Answer 7

Pgas = Atmospheric pressure + the difference in Hg level

Question 8

Molar mass equation

Answer 8

MM= mRT/PV

Question 9

Pressure of gas in open- ended manometer

Answer 9

Have to dtermine which side is lower where if the gas side is lower have to add the difference in Hg levels since the gas side is greater than atmospheric pressure (Visa Vers if its lower)

Question 10

Combined gas law

Answer 10

P₁V₁/T₁ = P₂V₂/T₂

Question 11

Average velocity

Answer 11

The velocity between V_mp & V_rms

(V_avg = square root(8RT/πMM)

Question 12

Graham’s Law of effusion & diffusion

Answer 12

at constant temp & pressure, the rate that gasses diffuse & effuse is inversely proportional to the square root of their denisity or molar mass/weight

(R₁/R₂= suare root(M₁) / square root(M₂)

Question 13

Density equation

Answer 13

MMP/RT

Question 14

Manometer

Answer 14

a device used to mesure the pressure of a gas in a closed container

Question 16

No name law

Answer 16

states that at consatnt temp & volume, pressure is directly proportional to the amount (moles) (P directly proportional to n)

Question 17

Diffusion

Answer 17

is the rate at which two gages mix together (Gases move from high concentration to low concentration)

Question 18

4 Variables that affect gas behavior

Answer 18

1. Temperature
2. Pressure
3. Volume
4. Amount

Question 19

Gases

Answer 19

state of matter where particles are in constant, rapid, independent movement

Question 20

Most probable velocity

Answer 20

Is the speed at which the largest number of particles are moving (V_mp = square root(3RT/MM)

Question 21

The average kinetic energy is directly proportional to what?

Answer 21

Temperature

Question 22

Boyle’s Law

Answer 22

At constant temp., pressure & volume are directly inversely proportional to each other (P₁V₁= P₂V₂₎

Question 23

Open-closed manometer

Answer 23

the side thats its open on depends on the atmospheric pressure

Question 24

Avogadro’s Hypothesis

Answer 24

Equal volumes of different gas under the same conditions contains the sam enumber of particles

Question 25

Kinetic energy

Answer 25

energy of motion like translational, vibrationalm, & rotational (its directly proportional to temp)

Question 26

Van der Waals Equation

Answer 26

[P + an²/v²] (v-nb) = nRT

Question 27

Gay - Lussac Law

Answer 27

At constant volume, pressure is directly proportional to temp (P₁/P₂ = T₁/T₂)

Question 28

Pressure of gas in closed-ended manomteter

Answer 28

Since theres no exposure to the atmospheric pressure its depends on the difference in Hg levels

Question 29

Ideal gas law

Answer 29

when nothing is constant PV=nRT (R= 0.0821 atm/mol)