Ch 13 Kinetics

Question 1

Rate of rxn

Answer 1

k[A][B] to some orders in both cases

Only reactants and aqueous or gases

Question 2

Ln(Rate) =lnk+ln[A]^x

Answer 2

Y= mx + b

Question 3

Integrated rate law

Answer 3

Used when k and time is used in both. Or initial and other concentration is given or asked for.

Question 4

[A]=[A]o -kt

Answer 4

Zero order

Question 5

[A]= [A]o e^-kt

Answer 5

First order

Question 6

1/[A] = 1/ [A]o + kt

Answer 6

Second order

Question 7

If first order then slope =

Answer 7

-k

Question 8

If second order then slope equals

Answer 8

k

Question 9

Half life

Answer 9

When asked for 1/2 of initial concentration and given k then use half life

Question 10

Lnk = lnA -(Ea/R)(1/T)

Answer 10

Y = b + m x

Question 11

Uni molecular

Answer 11

One molecule reacts

Question 12

Bimolecular

Answer 12

Two molecules react (even if same molecule)

Question 13

Three molecules react

Answer 13

Termolecular (highly unlikely and at high pressures)

Question 14

Equilibrium constant at step reactions

Answer 14

k1/k-1 = [C][D]/ [A][B]

Question 15

If first step isn’t slow then …

Answer 15

U go to previous steps which are fast. solve for their equilibrium k and solve for the intermediate to substitute in for the observed rate at slow step

Question 16

Catalysts

Answer 16

• Lower the activation energy

- are consumed then produced

Question 17

Rate of rxn

Answer 17

Divide by stoichiometric coefficient

For reactants = - rate

For products =+ rate