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Chemistry Combustion

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SOLUTION/ANSWER: C3H8 + 5O2 → 3CO2 + 4H2O Heat of reaction = ∑ 𝑛(𝑏𝑜𝑛𝑑𝑠 𝑏𝑟𝑜𝑘𝑒𝑛) − ∑ 𝑚(𝑏𝑜𝑛𝑑𝑠 𝑓𝑜𝑟𝑚𝑒𝑑) Reactants: (bonds are broken) Type of bond Number C-H 8 C-C 2 O=O 5 Grand Total kJ/mol 416 356 498 Total 3328 712 2490 6530 kJ/mol 745 467 Total 4470 3736 8206 Products: (bonds are formed) Type of bond Number C=O 6 O-H 8 Grand Total Heat of reaction = ∑ 𝑛(𝑏𝑜𝑛𝑑𝑠 𝑏𝑟𝑜𝑘𝑒𝑛) − ∑ 𝑚(𝑏𝑜𝑛𝑑𝑠 𝑓𝑜𝑟𝑚𝑒𝑑) Heat of reaction = 6530 kJ/mol – 8206 kJ/mol ...
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