Endothermicity
| Formula / Notation | ΔH > 0; q_p > 0 (heat absorbed) |
|---|---|
| Also Known As | Endothermic character; heat absorption; positive enthalpy change; ΔH > 0; endothermal |
What is Endothermicity?
Endothermicity refers to the property of a reaction or process that absorbs heat from the surroundings. An endothermic reaction has a positive enthalpy change (ΔH > 0), meaning the products have higher energy than the reactants. The surroundings cool down as heat flows into the system. Endothermicity is the opposite of exothermicity.
Formula & Notation
Other Names / Synonyms: Endothermic character; heat absorption; positive enthalpy change; ΔH > 0; endothermal
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Endothermicity refers to the property of a reaction or process that absorbs heat from the surroundings. An endothermic reaction has a positive enthalpy change (ΔH > 0), meaning the products have higher energy than the reactants. The surroundings cool down as heat flows into the system. Endothermicity is the opposite of exothermicity.
Cold packs (endothermic dissolution of NH₄NO₃); refrigeration cycles; photosynthesis; thermal decomposition reactions in industry; endothermic metal extraction processes; modelling reaction energetics
No direct hazard from the concept. Some endothermic reactions require high temperatures or explosive conditions to initiate. Cold packs (NH₄NO₃) are safe but the salt is an oxidiser/explosive hazard in concentrated form.
The formula or notation for Endothermicity is: ΔH > 0; q_p > 0 (heat absorbed)