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Determining the rate laws of the reaction

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Reference no: EM131517876

Reaction Order and Rate Laws

Lab Report Assistant

This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment's questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students' writing of lab reports by providing this information in an editable file which can be sent to an instructor.

Exercise 1: Determining the Rate Laws of the Reaction between HCl and Na2S2O3

Data Table 1. Varying Concentrations of 1.0 M HCl.

 

Concentrations

 

 

# of drops

# of drops

# of drops

Stock Solution

Stock Solution

Reaction (after mixing in well)

Reaction (after mixing in well)

Reaction Time

(seconds)

Reaction

Rate

(sec-1)

Well #

HCl

H2O

Na2S2O3

HCl

Na2S2O3

HCl

Na2S2O3

Trial 1

Trial 2

Average

 

C1, D1

12

0

8

1M

0.3M

.6

.12

30.76

32.90

31.83

.0314

C2, D2

6

6

8

1M

0.3M

.3

.12

35.10

38.11

36.61

.0273

C3, D3

4

8

8

1M

0.3M

.2

.12

46.23

47.79

47.01

.0213

Data Table 2. Varying Concentrations of 0.3 M Na2S2O3.

 

Concentrations

 

 

# of drops

# of drops

# of drops

Stock Solution

Stock Solution

Reaction (after mixing in well)

Reaction (after mixing in well)

Reaction Time

(seconds)

Reaction

Rate

(sec-1)

Well #

HCl

H2O

Na2S2O3

HCl

Na2S2O3

HCl

Na2S2O3

Trial 1

Trial 2

Average

 

C4, D4

8

0

12

1M

0.3M

.4

.18

22.47

22.02

22.45

.0449

C5, D5

8

6

6

1M

0.3M

.4

.09

49.44

50.76

50.1

.02

C6, D6

8

8

4

1M

0.3M

.4

.06

107.2

105.59

105.395

.0095

Questions

A. Determine the Reaction Order for HCl.

B. Determine the Reaction Order for Na2S2O3.

C. Write the rate law for the reaction between HCl and Na2S2O3.

D. Using the following rate law, and the experimental values given, calculate k:

RATE = k[F2][ClO2]

Experiment

[F2] (M)

[ClO2] (M)

Initial rate (M/s)

1

0.5

0.5

0.300 M/s

2

0.8

0.8

0.768 M/s

3

0.5

0.8

0.480 M/s

E. Describe sources of error in this experiment?

Verified Expert

This assignment was a lab report, an experiment performed by the student and noted down the readings based on reaction orders. I was required to perform the calculations like calculating the order of reaction for both Na2S2O3 and HCl as well as to calculate the value of equilibrium constant for a given set of conditions.

Reference no: EM131517876

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