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# Laboratory Assignment For Module 3: Reaction Rates

Laboratory Assignment For Module 3: Reaction Rates. Name:

College ID:

Thomas Edison State College

General Chemistry II with Labs (CHE-122)

Section no.:

Semester and year:

## LABORATORY REPORT

Laboratory Assignment for Module 3: Reaction Rates
(eScience Lab 4 [16])

### II.    TEST DATA (15 POINTS)

Table 1. 10 mL Undiluted IKI and 5 mL 3% H2O2

 Water displaced in milliliters Time in seconds 2 mL 4 mL 6 mL 8 mL 10 mL 12 mL 14 mL 16 mL 18 mL 20 mL 22 mL

Table 2. 10 mL 0.5–1.0% IKI and 5 mL 3% H2O2

 Water displaced in milliliters Time in seconds 2 mL 4 mL 6 mL 8 mL 10 mL 12 mL 14 mL 16 mL 18 mL 20 mL 22 mL

Table 3. 10 mL 0.5–1.0% IKI and 5 mL 2.25% H2O2

 Water displaced in milliters Time in seconds 2 mL 4 mL 6 mL 8 mL 10 mL 12 mL 14 mL 16 mL 18 mL 20 mL 22 mL

III. CALCULATIONS (20 POINTS)

Table 1: 10 mL Undiluted IKI and 5 mL 3% H2O2

Slope:

Inverse Slope:

Table 2: 10 mL 0.5–1.0% IKI and 5 mL 3% H2O2

Slope:

Inverse Slope:

Table 3:10 mL 0.5–1.0% IKI and 5 mL 2.25% H2O2

Slope:

Inverse Slope:

Order of H2O2:

Order of IKI:

Rate law constant:

*Show Calculations and Include Graphs

IV.  RESULTS (15 POINTS)

Overall rate law:

### V.     QUESTIONS (30 POINTS)

1.      How many grams of IKI (iodine-potassium iodide; molar mass = 166.0 g/mol) would it take to obtain a 100.0 mL solution of 0.300 M IKI? How many grams of IKI would it take to create a 100.0 mL solution of 0.600 M IKI? (6 points)

2.      What is the molarity of 100.0 mL of a 3.0% H2O2 (mass/volume) solution? What is the molarity of 100.0 mL  of a 2.25% H2O2 (mass/volume) solution?  (6 points)

3.      When finding the order of H2O2, why was Trial 1 and Trial 3 used? (6 points)

4.      When  finding the order of IKI, why was Trial 1 and Trial 2 used? (6 points)

5.      How does temperature affect the reaction rate? Explain in terms of the collision theory.
(6 points)

Laboratory Assignment For Module 3: Reaction Rates

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