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Based on relative bond strengths, classify these reactions as endothermic (energy absorbed) or exothermic (energy released) endothermic B2+C2-->2BC A+BC-->AB+C exothermic AB+C-->AC+B A2+C2-->2AC A2+B2-->2AB

Heather Maxwell

in Physics

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William Cain on November 11, 2018

Exothermic reaction is a chemical reaction that releases energy. This reaction releases energy from heat or light . In an endotermic reaction that uses energy. Enthaply is the heat energy change , delta H. If the sum of the enthalpies of the reactans is greater than that of the products of the reaction is exothermic. If the products side has a larger enthaply that the process is endothermic. Therefore, if delta H is negative, then the process is exothermic. If delta H is positive the process is endothermic. Exothermic: a+BC -> AB+C A2+B2 -> 2AB Endothermic are:AB+C -> AC+B A2 + C2 -> 2AC B2+C2 -> 2BC


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