Chem 40 – Theme 4 | Exploring uses of redox reactions 

Oxidation Reduction stain remover design

Introduction:

When fabric is stained by tea, wine, or coffee, we are quick to use a stain remover to remove the stain. But what exactly is going on at the molecular level when these stains are removed? How do stain removers work? What types of stains are there?

Stain removers utilize the oxidation power of oxidizing agents which cause the molecule giving the stained color to lose electrons changing it to a colourless form.

In this project, you are to design your own stain remover, design and test your stain remover based on its effectiveness based on 2 different variables, and to report your observations on a formal scientific poster. The variables can be concentration, temperature, volume, types of chemicals, etc…

Oxidation Reduction stain remover design

Introduction:

When fabric is stained by tea, wine, or coffee, we are quick to use a stain remover to remove the stain. But what exactly is going on at the molecular level when these stains are removed? How do stain removers work? What types of stains are there?

Stain removers utilize the oxidation power of oxidizing agents which cause the molecule giving the stained color to lose electrons changing it to a colourless form.

In this project, you are to design your own stain remover, design and test your stain remover based on its effectiveness based on 2 different variables, and to report your observations on a formal scientific poster. The variables can be concentration, temperature, volume, types of chemicals, etc…

Specific Outcomes

1. Explain reduction and oxidation reactions in terms of electron movements (C12-01-08)
2. Determining oxidation numbers for atoms in compounds and ions (C12-01-09)
3. Identify reactions as redox or non-redox (C12-01-10) 
4. Balance redox reactions  (C12-01-11)
5. Practical uses of redox reactions (C12-01-12) 
6. Define reaction rate  (C12-03-01)
7. Identify variables to monitor reaction rates (C12-03-02)
8. Factors that affect reaction rates (C12-03-05)
9. What happens when a reaction occurs using Collision Theory?  (C12-03-06)
10. Draw Potential Energy diagrams of a reaction ( C12-03-07)
11. Calculating Rate Law

Deliverables

• Formal  group poster on your stain remover
• Poster presentation 
• Individual lab portfolios
• Weekly Quizzes

Schedule

• Bench mark point December 12th
• Presentation December 18th & 19th

Watch these to help and guide you along. You are expected to watch all of these videos and complete the workbook required. 

1. Assignment oxidation numbers https://www.youtube.com/watch?v=aWwuADRsSu4

2. Identifying redox reactions  https://youtu.be/acN6iibCGo8

3. Balancing with oxidation numbers: https://youtu.be/Z2RmsQFsHOA

4. Rate Law: https://youtu.be/6j_12SWrH2c

5. Another example with Rate Law: https://youtu.be/DXFwSzW_uRQ

6. Reaction mechanism: https://youtu.be/blARUaWpd48

7. Potential Energy Curves: https://youtu.be/_uiCWDcBejg

Notes:

• Basic Chemical Kinetics Notes: Overall chem Kinetics Notes
• Unit Outline: Kinetics outline
• Notes 1: Defining Kinetics and calculating rates: 1kineticsnew
• Notes 2 Collision Theory, and PE curves 3kineticsnotes
• Notes 2: Student Version 3kineticsnotesstudents
• Notes 3 Calculating rate with stoichiometry: Stoichiometry calculations
• Notes 4: Factors affecting rates: Factors affecting rates
• Notes 5: Collision theory – what makes reactions occur: Collision theory
• Notes 6: Reaction mechanism notes: Reaction mechanism notes
• Note 7: Rate Law notes: Calculating Rate law Notes

Worksheets:

• Exercise booklet Exercise booklet kinetics
• Similar exercise booklet on the unit: Work booklet 

Review:

• Kinetics Unit Final Inquiry Final Project: Kinetics final project
• Kinetics Review: kinetics review questions