Lecture 11 Chapter 6 (Thermodynamics)

Lecture 11 Chapter 6 (Thermodynamics) - Chapter 6 continued...

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Unformatted text preview: Chapter 6 continued (Thermodynamics) Lecture 11 October 6, 2009 For the following combustion reaction, what (in units of RT) has to be added to ΔE to make it equal ΔH? 2C 6 H 14 (l) + 19 O 2 (g) → 12 CO 2 (g) + 14 H 2 O (l) (A) 19RT (B) -7RT (C) 0RT (D) 7RT (E) -12RT Imagine heat as a reactant in an endothermic process and heat as a product in an exothermic process: A + B + heat C + D endothermic, +∆H A + B C + D + heat exothermic, - ∆H Important Types of Enthalpy Changes Combustion Reaction – the heat of reaction is called “heat of combustion” Formation Reaction – one mole of a substance is formed from its elements the heat of reaction is called “heat of formation” When one mole of a substance melts, heat of reaction is called the “heat of fusion” When one mole of a substance vaporizes, heat of reaction is called the “heat of vaporization” ∆H in stoichiometric calculations A thermochemical equation is a balanced equation that includes the heat of reaction Example: Consider the following balanced thermochemical...
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This note was uploaded on 04/04/2011 for the course CHEM 1100 taught by Professor Mcintosh during the Fall '08 term at Rensselaer Polytechnic Institute.

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Lecture 11 Chapter 6 (Thermodynamics) - Chapter 6 continued...

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