2012年2月18日土曜日

What Is The Enthalpy Change Sign

what is the enthalpy change sign

Cracking Polymers - Enthalpy Changes

YIKES !!!

So one C-C bond is broken and one C=C bond is formed ? That still gives me a negative answer....

C40H82 has 39 C-C bonds and 82 C-H bonds

C16H34 has 15 C-C bonds and 34 C-H bonds
C24H48 has 22 C-C bonds, 1 C=C bond and 48 C-H bonds
------------------------------------------------------------------------- total
37 * C-C, 1 * C=C and 82 * C-H



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