Chemical Reactions And Equations Worksheet With Answer Key - The University Of Sydney Page 9
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40CHEM1101
2013-N-10
November 2013
Using the same table of average bond enthalpies, estimate the atomisation enthalpy of
each product of the complete combustion.
CO
contains 2 C=O bonds:
2
-1
-1
H = 2 × ΔH (C=O) = 2 × 804 kJ mol
= 1608 kJ mol
Δ
atom
H
O contains 2 O-H bonds:
2
-1
-1
H = 2 × ΔH (O-H) = 2 × 463 kJ mol
= 926 kJ mol
Δ
atom
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