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Question	Answer
Nonspontaneous reaction	Is a reaction that does not favor the formation of products at the given set of conditions. In order for a reaction to be nonspontaneous, one or both of the driving forces must favor the reactants over the products.
Image: Nonspontaneous (binary/octet-stream)	In other words, the reaction is endothermic, is accompanied by a decrease in entropy, or both.
Out atmosphere is composed primarily of a mixture of nitrogen and oxygen gases. One could write an equation showing these gases undergoing a chemical reaction to form nitrogen monoxide.	Image: Rx Atmosfera (binary/octet-stream)
Fortunately, this reaction is nonspontaneous at normal temperatures and pressures. It is a highly endothermic reaction with a slightly positive entropy change (ΔS) . However, nitrogen monoxide is capable of being produced at very high temperatures, and this reaction has been observed to occur as a result of lightning strikes.	Image: Tormenta Electrica (binary/octet-stream)

nonspontaneous reaction

	Created by Alvaro Vargas Calero about 6 years ago