Kinetics                       test [80 points]                                                            Chem

Show your work in an organized manner, include (i) any relevant equation (or formula), (ii) conversion factor(s), (iii) put the proper units in your calculations and answer, and (iv) have the proper number of significant figures in your answer.

1. In regards to the reaction,   CH3OH  +  O2  -->  CO2  +  H2O, fill-in the below table.  [25 points]

Rate (mM / min)

  dCH3OH / dt (mM / min)

dO2 / dt ;  (mM / min)

 dCO2 / dt; (mM / min)

 dH2O / dt; (mM / min)

40

a.

b.

 c.

d.

e.

f.

- 15

g.

h.

i.

j.

k.

40

l.


2.  Based on the hypothetical experimental data in the below table, what is the rate law for the reaction:  N2  +  H2  à  NH3 ?  [20 points]

Expt

Rate (mM / min)

[N2]  (M)

[H2]  (M)

1

1.0

1.0

1.0

2

2.0

2.0

1.0

3

8.0

4.0

4.0

 

3.  Assume that the reaction:   N2  +  H2  à  NH3, has an activation energy of 50 kJ / mol for the forward reaction, ____.  [15 points]

a. Sketch / label the reaction energy profile

b. What is the activation energy of the backward reaction ?


4.  Basis / describe how to determine the activation energy of a reaction using  ___.  [20 points]