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15.2 Entropy and spontaneity

Experiments

Here are experiments our science specialists have selected to support the IB* topic.

Recommended

Investigating Thermodynamic Relationships of Substituted Hydrocarbons

Experiment #11 from Organic Chemistry with Vernier

In this experiment, you will

  • Collect and analyze GC data from various samples.
  • Calculate the equilibrium constant between the various compounds and the GC column.
  • Use the equilibrium constant to identify the change in free energy of solution.
  • From the temperature dependent data, calculate the change in enthalpy and entropy of the solution.
  • Observe the changes in Gibb’s free energy with the number of carbon atoms in the samples studied.

Educational Standard
International Baccalaureate (IB)
Subject
Chemistry
Section
Additional Higher Level (AHL)
Topic
15. Energetics/Thermochemistry

* The IB Diploma Program is an official program of the International Baccalaureate Organization (IBO) which authorizes schools to offer it. The material available here has been developed independently of the IBO and is not endorsed by it.

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