Last modified: Thu 07/07/2016 01:55:01 pm
ACA

Oklahoma State University

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First Name:

Last Name:

Laboratory Section:

Two sets of experimental data were collected for the following decomposition reaction at a given temperature;

NO2(g) ---> NO(g) + O(g)

and are displayed in Table I and II below.

time (seconds)

[NO2]

0

0.20000

0.10

0.19898

0.20

0.19798

0.30

0.19699

1.00

0.19029

2.00

0.18149

3.00

0.17346

10.0

0.13245

20.0

0.09901

30.0

0.07905

Table I.

1. Determine the slope of the line that is drawn between the first two data points (0,0.20000 and 0.10,0.19898) in the above table. The slope of this line is called the rate of the reaction.

M s-1

 

time (seconds)

[NO2] (M)

0

0.60000

0.10

0.59096

0.20

0.58218

0.30

0.57367

1.00

0.52038

2.00

0.45942

3.00

0.41124

10.0

0.23715

20.0

0.14778

30.0

0.10733

Table II.

2. Determine the slope of the line that is drawn between the first two data points (0,0.60000 and 0.10,0.59096) in the above table. The slope of this line is called the rate of the reaction.

M s-1

3. Determine the quotient of the initial concentration of NO2 in Experiment 2 (data shown in Table II) and Experiment 1 (data shown in Table I).

[NO2]Exp2/[NO2]Exp1 =

4. Determine the quotient of the slope of the line determined in Q2 and Q1.

slope of lineExp2/slope of lineExp1 = rate of rxnExp2/rate of rxnExp1 =

5. Does the result of Q3 equal the result of Q4?

Yes/No

6. What could be done, mathematically, to the result of Q3 to make it equal to the result of Q4?

7. Is there anything about the reaction or the questions that you feel you do not understand? List your concerns/questions.

8. If there is one question you would like to have answered in lecture, what would that question be?