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Difference between mean bond enthalpy and bond enthalpy. Watch

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    What is the difference?

    I was given 2 equations "CH4 --> CH3 + H" and "CH4--> C + 4H" and asked to identify which enthalpy represents each.:confused::confused:
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    (Original post by polaritymolecule)
    What is the difference?

    I was given 2 equations "CH4 --> CH3 + H" and "CH4--> C + 4H" and asked to identify which enthalpy represents each.:confused::confused:
    Mean bond enthalpy is the average for a particular type of bond measured over many different types of molecule.

    The bond dissociation enthalpy refers to a specific bond within a specific molecule.

    The example 1 above specifies which bond is being broken in a determined molecule. It is the bond dissociation enthalpy.

    Example 2 shows the total for four C-H bonds. Dividing this number by four gives you the mean bond enthalpy for C-H bonds in methane. In this case none of the actual bond enthalpies have this value...
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    Thank you very much. Exact explanation i was looking for
 
 
 
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