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    For this question, I have put CH4-> C2 + 2H2 but it should be just 4H, why is that?

    Thanks
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    Because you want to break the 4 C-H bonds to find their enthalpy. Draw the structure and think about what the products would be if these bonds are broken.
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    (Original post by alow)
    Because you want to break the 4 C-H bonds to find their enthalpy. Draw the structure and think about what the products would be if these bonds are broken.
    Oh okay that explains a lot, I didn't really get what it means but I do now. Thanks
 
 
 
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