Using these bond energies, ?H: C—C: 348 kJ/mol C?C: 612 kJ/mol C—H: 412 kJ/mol C—O: 360 kJ C?O: 743 kJ/mol H—H: 436 kJ/mol H—O: 463 kJ/mol O?O: 498 kJ Calculate the value of ?H° of reaction: C2H4(g) + H2O(g) ? C2H5OH(g) a. +224 kJ/mol b. -13 kJ/mol c. -124 kJ/mol d. -45 kJ/mol
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For C2H4, there is one C=C bond and four C-H bonds. So, the total energy required to break these bonds is: 1 * 612 kJ/mol (for C=C) + 4 * 412 kJ/mol (for C-H) = 612 + 1648 = 2260 kJ/mol For H2O, there are two O-H bonds. So, the total energy required to break Show more…
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