Extent and rates of reaction

Question 1

Fick’s law

Answer 1

diffusion is greater when concentration varies steeply

Question 2

Phenomenological diffusion

Answer 2

movement of substance from high to low conc. without bulk motion

Question 3

Atomistic diffusion

Answer 3

molecules propelled by collisions in high conc. areas

Question 4

Rotation

Answer 4

movement about an axis

Question 5

Translation

Answer 5

movement from one place to another

Question 6

Vibration

Answer 6

motion of one atom in relation to another

Question 7

Effect of temp on rate constants?

Answer 7

rate constants increase with temp

Question 8

how does a catalyst work?

Answer 8

modifies reaction energy pathways

Question 9

Order of a reaction?

Answer 9

sum of exponents of concentrations in rate law equation

Question 10

First order reaction…

Answer 10

-single reactant converted to product
-rate proportional to concentration of reactant
- k is first order rate constant

Question 11

First order reaction rate

Answer 11

Ln[A]t = -Kt +ln[A]0

Question 12

First order half life

Answer 12

T1/2= ln2/K1

Question 13

Second order reaction rate

Answer 13

1/[A]t = K2t + 1/[A]0

Question 14

second order half life

Answer 14

T1/2= 1/K2[A]0

Question 15

Zero order reaction rate

Answer 15

[A]t=[A]0-Kt

Question 16

Zero order half life

Answer 16

T1/2= [A]0/2K