Respuesta :
The enthalpies of the reactants and products are added together, and the difference is used to compute the enthalpy of a reaction i.e, ΔH°rxn. The reaction is endothermic and absorbs heat from the environment if ΔH°rxn is positive.
The energy released or consumed when one mole of a substance is formed under typical conditions from its pure constituents is measured by the standard enthalpy of formation. The standard enthalpy of formation is represented by the symbol ΔH°f. A degree denotes a standard enthalpy change.
To get ΔH°rxn from ΔH°f, use the following straightforward formula:
ΔH°rxn = ∑nΔH°f(product) - ∑nΔH°f(reactant).
The stoichiometric coefficients for each reactant and product are n and m, respectively. Be aware that whereas the bond dissociation energy formula is reactants - products, the heat of formation formula is products - reactants.
standard enthalpy is significant because it tells us how much heat is there in a system (energy). Heat is crucial because it allows us to produce useful work. In terms of a chemical process, an enthalpy shift reveals how much enthalpy was gained or lost. Enthalpy is the system's heat energy.
To know more about standard enthalpy refer to: https://brainly.com/question/11417334
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