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heat of reaction |
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heat of reaction [′hēt əv rē′ak·shən] (physical chemistry) The negative of the change in enthalpy accompanying a chemical reaction at constant pressure. The negative of the change in internal energy accompanying a chemical reaction at constant volume. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| where, k = velocity constant or specific reaction rate constant and [DELTA]H = heat of reaction (vulcanization) or cure enthalpy. Ignition of the built-up lining within duct systems has been attributed to hot work practices, flames from the molds, burning tramp material from the pouring station, heat of reaction from the buildup itself and static discharge within the duct system. This reaction can be shown to be endothermic by calculating the heat of reaction and referencing the heats of formation (Btu/lb mole) for each element. |
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