7.5 the kinetic molar theory of gas

Question 1

what does the KMT try to explain?

Answer 1

the properties of ideal gas

Question 2

what is the KMT based on?

Answer 2

speculations about the behavior of individual gas particles

Question 3

what is the 1st postulate of the KMT?

Answer 3

Vparticle = 0 (particles are so small compared to distance between them)

Question 4

what is the 2nd postulate of KMT?

Answer 4

the particles are in constant motion and the collisions of the particles with the walls of the container are what causes P exerted by the gas

Question 5

what is the 3rd postulate of KMT?

Answer 5

the particles neither attract nor repel each other (but collide elasticly)

Question 6

what is the 4th postulate of KMT?

Answer 6

the avg KE of a collection of gas particles is assumed to be directly proportional to the T in K

Question 7

which postulates of KMT are known to not be accurate?

Answer 7

1st and 3rd
particles do have volume
particles do attract/repel each other otherwise we would not have liquids and solids

Question 8

urms =

Answer 8

the avg velocities of the particles
square root of (3RT/M)
where R = 8.3145 J/K mol
T = temp in K
M = molar mass in kg/mol