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Entropy and Reaction Spontaneity

by Anonymous

Raise the temperature far enough and a reaction that refused to happen suddenly runs on its own.

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About this app

Entropy and Reaction Spontaneity is an interactive chemistry learning app about how disorder, enthalpy, entropy, and temperature affect whether a reaction proceeds spontaneously. Explore solid, liquid, and gas states by changing the number of available sites, then use ΔG = ΔH − TΔS to evaluate spontaneity and identify the temperature where the result changes.

Use cases

  • High school chemistry students studying entropy and Gibbs free energy
  • Teachers demonstrating reaction spontaneity in class
  • Learners comparing particle arrangements in different states of matter
  • Students practicing how temperature changes ΔG and spontaneity

Features

  • Compare solid, liquid, and gas states through particle arrangement models
  • Change the number of available sites and observe how possible arrangements vary
  • Adjust ΔH, ΔS, and temperature to calculate and interpret ΔG
  • Visualize whether a reaction is spontaneous using interactive diagrams
  • Find boundary temperatures where ΔG equals zero
  • Complete guided missions covering entropy, Gibbs free energy, and temperature effects