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Heat of reaction method

Calculating D H in a reactive system …Heat of formation or Heat of reaction method?. ( See Page 9-9 in notes ). Yes. Start :. Do you know D H r ?. Yes. No. More than one reaction?. No. Heat of formation method. Heat of reaction method. Reference: Elements at 25 ° C and 1 atm.

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Heat of reaction method

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  1. Calculating DH in a reactive system …Heat of formation or Heat of reaction method? (See Page 9-9 in notes) Yes Start: Do you know DHr? Yes No More than one reaction? No Heat of formation method Heat of reaction method Reference: Elements at 25 °C and 1 atm Reference: Molecules at T,P, phase of known DHr (25 °C and 1 atm if DHr) ^ Notes: - For a closed system, use U - If you know Q, then the conditions (e.g. T) of a stream may be treated as an unknown and solved from the energy balance (pg 9-16 to 9-17 in notes) Find extent of reaction (x) to determine heat of rxn

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