WebDec 29, 2024 · The bond breaking is always endothermic. The formation of new bonds is exothermic, so depending on whether the old bonds or the new bonds were stronger, the reaction overall can be either endothermic or exothermic. When somebody says chemical bonds “contain potential energy” it is a HIGHLY misleading statement. You justifiably … In summary, there are two factors which determine whether a gaseous reaction will be exothermic or not: (1) the relative strengths of the bonds as measured by the bond enthalpies, and (2) the relative number of bonds broken and formed. An exothermic reaction corresponds to the formation of more bonds, stronger bonds, or both.
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WebBreaking of bonds requires absorption of energy, while formation of bonds releases energy. To break one mole of H_2 H 2, energy absorbed is 436 436 kJ. To break one mole of F_2 F 2, energy absorbed is 158 kJ. To form two moles of HF H F, energy released … WebThis is due to the fact that the process of breaking bonds consumes energy, whereas the process of creating new bonds results in the release of energy. When bonds are broken in an endothermic reaction, energy is absorbed into the system; on the other hand, energy is released when bonds are formed in an exothermic reaction. grandmother of the groom petite dresses
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WebBond-breaking is an endothermic process. Energy is released when new bonds form. Bond-making is an exothermic process. Whether a reaction is endothermic or … Webweek 6 chem. Term. 1 / 48. positive numbers and therefore endothermic. Click the card to flip 👆. Definition. 1 / 48. Since bond breaking requires energy, bond dissociation energies are ______. Multiple choice question. WebA. Bond breaking is endothermic and requires energy. B. Bond breaking is endothermic and releases energy. C. Bond making is exothermic and requires energy. D. Bond making is endothermic and releases energy. a Consider the following reactions. Cu2O (s) + O2 (g) → 2CuO (s) ∆HO = -144 kJ Cu2O (s) → Cu (s) + CuO (s) ∆HO = +11 kJ grandmother of the groom long dresses