Classroom Activity

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Key Topic: Stoichiometry, chemical equilibrium, thermodynamics

Aboard the International Space Station (ISS), human life exists and must be maintained by a well organized and precise life support system. One part of the life support system generates water to be used by the crew members. In this activity students will analyze the reaction that takes place in this chemical process with hydrogen and carbon dioxide.

Students will
  • write an equilibrium expression for a reaction;
  • determine a mass and volume relationship with an emphasis on mole concepts;
  • calculate changes in enthalpy, entropy, and free energy;
  • calculate reaction quotient; and
  • predict the shift in reaction based on Le Chatelier’s principle.

› Generating Water in Space Educator Edition (PDF 214 KB)
› Generating Water in Space Student Edition (PDF 206 KB)

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