Unit 5 - Kinetics

Question 1

What is kinetics

Answer 1

Study of reaction rates

Question 2

What is the equation for the rate

Answer 2

(Change in conc) / (Change in time)
___________________________
Stoichiometric coefficient

Question 3

The rate is always

Answer 3

Negative

Question 4

What is the equation for rate involving the concentrations

Answer 4

k [A}^x [B]^y

Question 5

What is k

Answer 5

the rate constanct

Question 6

Is the rate constant constant?

What determines the rate constant

Answer 6

No

Depends on several factors including temperature and catalystss

Question 7

A zero order reaction

Answer 7

Constant half life
Double concentration = no rate change
Units ms-1

Question 8

A first order reaction

Answer 8

t1/2 decreases
Double conc = double rate
Units are s-1

Question 9

A second order reaction

Answer 9

t1/2 increases
Double conc - square the rate
Units are m-1s-1

Question 10

What is the half life or a first order reaction

Answer 10

ln2/k`

Question 11

Approx ln2 =

Answer 11

0.693

Question 12

What is the half life of a second order reaction

Answer 12

1/(K [A0])

Question 13

What is the half life of zero order reaction

Answer 13

[A0] / 2k

Question 14

Beta decay is the

Answer 14

Loss of electrons

Question 15

What is the integrated rate law of a first order reaction

Answer 15

Ln[a]t = -kt + ln[A]o

Question 16

What is the integrated rate law of a second order reaction

Answer 16

kt = 1/[A]t - 1/[A]o

Question 17

What is the integrated rate law of zero order reactions

Answer 17

[A]t - [A]o = -kt