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ΔHf = ∑BE(R) – ∑BE(P).like this what is ΔHc( enthalpy of combustion) ΔHf = ∑BE(R) – ∑BE(P).like this what is ΔHc( enthalpy of combustion)
There are formulae that you can make use of to determine ΔHr when given Bond Energy/ΔHf/ΔHc.When given Bond Energy valuesΔHr = ∑Bond Energy(Bonds Broken) + ∑Bond Energy(Bonds formed)In this case here, remember to include the signs (bonds broken are +ve and bonds formed are -ve).When given ΔHfΔHr =∑ΔHf(Products) - ∑ΔHf(Reactants)When given ΔHcΔHr =∑ΔHc(Reactants) - ∑ΔHf(Products)
There are formulae that you can make use of to determine ΔHr when given Bond Energy/ΔHf/ΔHc.
When given Bond Energy valuesΔHr = ∑Bond Energy(Bonds Broken) + ∑Bond Energy(Bonds formed)In this case here, remember to include the signs (bonds broken are +ve and bonds formed are -ve).
When given ΔHfΔHr =∑ΔHf(Products) - ∑ΔHf(Reactants)
When given ΔHcΔHr =∑ΔHc(Reactants) - ∑ΔHf(Products)
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