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In thermochemistry, an exothermic reaction is a "reaction for which the overall standard enthalpy change ΔH⚬ is negative." Exothermic reactions usually release heat. The term is often confused with exergonic reaction, which IUPAC defines as "... a reaction for which the overall standard Gibbs energy change ΔG⚬ is … 展开
Examples are numerous: combustion, the thermite reaction, combining strong acids and bases, polymerizations. As an example in everyday life, hand warmers make use of the oxidation of iron to achieve an exothermic … 展开
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Exothermic process - Wikipedia
网页In thermodynamics, an exothermic process (from Ancient Greek έξω (éxō) 'outward' and θερμικός (thermikós) 'thermal') [1] is a thermodynamic process or reaction that releases energy from the system to its surroundings, [2] usually in the form of heat, but also in a form of light (e.g. a spark, flame, or flash), electricity (e.g. a ...
Exothermic reaction - Simple English Wikipedia, the free …
网页An exothermic reaction is a chemical reaction where the substances reacting release energy as heat. An example of this is combustion. Exothermic reactions transfer energy to the surroundings. The reaction that does the opposite (it …
放热反应 - 维基百科，自由的百科全书 - zh.wikipedia.org
网页2023年3月18日 · 放热反应（英语： Exothermic reaction ）是释出热量的一类化学反应，与吸热反应相对。 在放热反应中，破坏 化学键 所用的能量是少于组成键所释放的能量。
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放熱反應 - 維基百科，自由的百科全書 - zh.wikipedia.org
网页放熱反應（英語： Exothermic reaction ）是釋出熱量的一類化學反應，與吸熱反應相對。 在放熱反應中，破壞 化學鍵 所用的能量是少於組成鍵所釋放的能量。
Thermal runaway - Wikipedia
网页Chemical reactions involving thermal runaway are also called thermal explosions in chemical engineering, or runaway reactions in organic chemistry. It is a process by which an exothermic reaction goes out of control: the reaction rate increases due to an increase in temperature, causing a further increase in temperature and hence a further ...
Aluminothermic reaction - Wikipedia
网页Aluminothermic reactions are exothermic chemical reactions using aluminium as the reducing agent at high temperature. The process is industrially useful for production of alloys of iron. [1] The most prominent example is the thermite reaction between iron oxides and aluminium to produce iron itself: Fe 2 O 3 + 2 Al → 2 Fe + Al 2 O 3
Endothermic process - Wikipedia
网页If the energy of the forming bonds is greater than the energy of the breaking bonds, then energy is released. This is known as an exothermic reaction. However, if more energy is needed to break the bonds than the energy being released, energy is taken up. Therefore, it is an endothermic reaction. [7]
Exothermic reactions - Simple English Wikipedia, the free …
网页An exothermic reaction is a reaction where the substances react chemically to release energy in the form of heat. An example of this is combustion (burning). Exothermic reactions transfer energy to the surroundings.
