Category Archives: Bond enthalpies

Bond enthalpies

Definition Mean bond enthalpy. Students should be able to: • define the term mean bond enthalpy • use mean bond enthalpies to calculate an approximate value of ∆H for reactions in the gaseous phase • explain why values from mean bond enthalpy calculations differ from those determined using Hess’s law and enthalpy cycles. Assessment and practical opportunities  Students understand that bond enthalpies are mean

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