BRAINCAKEBond Enthalpy
Revision notes for Bond Enthalpy in Edexcel Chemistry (8CH0). Every lesson in BrainCake comes with R.E.C.I.P.E. recall steps, a quick check and spaced reviews.
- Bond EnthalpiesChemical reactions involve breaking bonds in the reactants and making new bonds in the products.
- Calculations using Mean Bond EnthalpiesTo estimate an enthalpy change from bond enthalpies, imagine the reaction happening in two stages: first every bond in the reactants is broken, then…
- Bond Enthalpy Question - 1Question Use mean bond enthalpies to estimate the enthalpy change of combustion of methane, with all substances as gases: CH4(g) + 2O2(g) → CO2(g) +…
- Bond Enthalpy Question - 2Question Estimate the enthalpy change for the hydrogenation of ethene: C2H4(g) + H2(g) → C2H6(g) Mean bond enthalpies / kJ mol-1: C=C 612, C-C 347…
- Bond Enthalpy Question - 3Question Estimate the enthalpy change for the Haber process reaction and compare it with the data book value.
- Bond Enthalpy Question - 4Question A bond enthalpy calculation can be rearranged to find an unknown bond enthalpy when ΔH is known.
- Bond Enthalpy Question - 5Question Estimate the enthalpy change for the reaction of methane with chlorine in UV light: CH4(g) + Cl2(g) → CH3Cl(g) + HCl(g) Mean bond…
- Bond Enthalpy Question - 6Question Estimate the enthalpy change for the combustion of gaseous ethanol: C2H5OH(g) + 3O2(g) → 2CO2(g) + 3H2O(g) Mean bond enthalpies / kJ mol-1…
- Bond Enthalpy Question - 7Question Use bond enthalpies to estimate the standard enthalpy change of formation of water vapour, and compare it with the data book value of…
- Bond Enthalpy Question - 8Question The standard enthalpy change of formation of ammonia is -46 kJ mol-1.
On the specification
- Topic 8: Energetics I