BRAINCAKEBond Enthalpy Question - 7
Question
Use bond enthalpies to estimate the standard enthalpy change of formation of water vapour, and compare it with the data book value of -241.8 kJ mol-1.
Bond enthalpies / kJ mol-1: H-H 436, O=O 498, O-H 464
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Key terms in this lesson
- mean bond enthalpy
- The average energy needed to break one mole of a particular covalent bond, measured over a range of compounds, with all species gaseous.
- enthalpy change of formation
- The enthalpy change when one mole of a compound is formed from its elements in their standard states, under standard conditions.
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All 10 lessons in Bond Enthalpy · All Edexcel AS-level Chemistry topics