The Gas Phase

Question 1

1atm=

Answer 1

1atm = 760mmHg = 760 torr = 101.3 kPa

Question 2

STP

Answer 2

273K, 1atm, 22.4L

Question 3

STP is used for

Answer 3

gas law calculations

Question 4

Standard Conditions

Answer 4

298K, 1atm, 1M

Question 5

Standard Conditions are used when

Answer 5

measuring standard enthalpy, entropy, gibbs free energy, and electromotive force

Question 6

Boyle’s Law

Answer 6

P1V1=P2V2

Question 7

Charle’s Law

Answer 7

V1/T1 = V2/T2

Question 8

Guy-Lussac’s Law

Answer 8

P1/T1 = P2/T2

Question 9

Avogadro’s Principle

Answer 9

n1/V1 = n2/V2

Question 10

Combined Gas Law

Answer 10

P1V1/T1 = P2V2/T2

Question 11

Ideal Gas Law

Answer 11

PV= nRT

Question 12

Derivations Due to Pressure in Real Gases

Answer 12

at moderately high pressure a gas’s volume is less than would be predicted

Question 13

Derivations Due to Temperature in Real Gases

Answer 13

at moderately low temperatures the gas’s volume is less than would be predicted

at extremely low temperatures the gas’s volume is more than would be predicted

Question 14

Van der Waal’s Equation of State

Answer 14

accounts for the deviations from ideality that occur when a gas does not closely follow the ideal gas law

(P+ n^2a/V^2)(V-nb) = nRT

Question 15

Dalton’s Law of Partial Pressures

Answer 15

the total pressure of a gaseous mixture is equal to the sum of the partial pressures of the individual components

Question 16

Kinetic Molecular Theory of Gases

Answer 16

an explanation of gaseous molecular behaviour based on the motion of individual molecules

Question 17

Average Molecular Speed Equation

Answer 17

K = 1/2 mv^2 = 3/2kB T

Question 18

Ideal Gas Constant

Answer 18

R= 8.3 J/mol . K

Question 19

Density Equation

Answer 19

p= m/V OR p= PM/RT

Question 20

Rate of Diffusion Equation

Answer 20

r1/r2 = sqr(M2/M1)