Driving question : How can you model the equilibrium between N2O4 and NO2?

In this activity students study an existing model of an irreversible reaction of N2O4 to NO2 and expand it in order to create a chemical equilibrium. In order to teach students to critically assess a model, the concentration quotient has to be calculated at some point in the activity. This activity focusses on the essence of modelling and less on the workings of an equilibrium.

Topic: Chemical equilibrium,
Concepts: Chemical equilibrium, Dynamic equilibrium, Equilibrium time, Reaction rate, Reaction rate constant,
Grade level: High School (14-18 years),
Activity type: Modeling,
Sensors: Not applicable,
Interface requirements: Not applicable,

The Student Worksheet gives investigation instructions for students.

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The Teacher Notes includes teacher commentaries such as didactical approach, exemplary questions, assignments and data analysis.

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The Science Background describes the scientific principles that underlie the activity.

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Coach Activity/Result file can be opened in the Coach 7 Program. This requires Coach 7 to be installed on your computer.

Download activity Gasses in Equilibrium (.cma7) Download result Gasses in Equilibrium (.cmr7)