Thermodynamics laboratory
Connect energy profiles, Hess cycles, calorimetry and Gibbs free energy in one live workspace.
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Scientific learning path
- 01UnderstandLive
- 02ExploreLive
- 03ExperimentLive
- 04ObserveLive
- 05ExplainLive
- 06ApplyLive
- 07TestLive
Explanation mode
Description of this simulation
The reaction enthalpy is -92 kJ mol⁻¹ and the forward activation energy is 175 kJ mol⁻¹.
Quick test · 3 questions
- ΔH
- -92 kJ mol⁻¹
- Eₐ
- 175 kJ mol⁻¹
Learning guide
- Learning objective
- Connect energy diagrams and measured heat to enthalpy, entropy and spontaneity.
- Core equation
- q = mcΔT; ΔG = ΔH − TΔS; ΔHtarget = Σ(multiplier × ΔH)
- Why the result changes
- Changing temperature alters the TΔS term; changing an equation direction or multiplier changes its enthalpy contribution.
- Try this challenge
- Find a temperature at which the sign of ΔG changes.
- Sources
- IUPAC Gold Book; Atkins' Physical Chemistry; CRC Handbook
What this model shows — and what it simplifies
Educational ModelThe laboratory keeps heat, enthalpy, entropy and free energy distinct and uses explicit units in every calculation.
Where do we see this in real life?
Thermodynamic balances govern engines, refrigeration, batteries, metabolism and industrial heat management.
Explain this result
Scientific review record
Building- Module version
- v1 bundled
- Published
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- Last reviewed
- Not yet verified
- Academic level
- School
- Reviewer
- Not publicly assigned
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