Exothermic Reaction

CHEMICAL REACTIONS
EXOTHERMIC REACTIONS:
When one substance is brought to pointher or mixed with another and the resulting interaction evolves or generates groove, the process is referred to as an exothermic reaction. An exothermic (exo- is a prefix meaning by of) reaction is one where the energy flows out of the system into the milieu. blaze reactions argon exothermic. more or less exothermic reactions may require heating just to get started, and will then proceed on their own.
Exothermic reactions pose special hazards whether occurring in the open environment or within a closed container. In the open, the heat evolved will raise the temperature of the reactants, of any products of the reaction, and of surrounding materials. Since several properties of all(prenominal) substances are a function of temperature, such as pressure, the resulting higher(prenominal) temperatures may affect how the materials involved behave in the environment.
heating system will increase the vapor pressures of hazardous materials and the rate at which they vaporize. If very high temperatures are achieved, nearby combustible materials may ignite. Explosive materials, whether they are the reactants of the reaction or just nearby, may explode upon ignition or excessive heating.
Similar hazards are associated with exothermic reactions taking place in closed containers.



In this case, however, increasing internal temperatures as well as the ontogeny of gases from the reaction may increase internal pressures to the point that the cooler or container ruptures violently in an over-pressurization explosion, thus suddenly releasing large amounts of possibly flammable and/or toxic gases or vapors into the atmosphere. Such gases or vapors may similarly be released through ruptured pipes, opened relief valves or devices, or any other paths to the external environment.
REACTIONS WITH WATER OR AIR
Some of the most basic types of exothermic reactions occur when certain materials are dissolved in water.
Such substances have what is called...If you want to get a full essay, order it on our website: Orderessay



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