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What is standard enthalpy of reaction? How is it related to bond enthalpy?

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Solution

Dear User, The standard enthalpy of reaction: (denoted ΔrH⊖) is the enthalpy change (amount of heat absorbed or evolved) that occurs in a system when one mole of matter is transformed by a chemical reaction under standard conditions. The bond enthalpy can be used to calculate enthalpy of a reaction. Enthalpy of a reaction = Sum of bond enthalpy of reactants - Sum of bond enthalpy of products Regards

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