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Thermodynamics filled in class notes_Part_72

Thermodynamics filled in class notes_Part_72 - Chapter 5...

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Chapter 5 Thermochemistry of a single reaction Read BS, Chapters 15, 16 See Abbott and Van Ness, Chapter 7 See Kondepudi and Prigogine, Chapters 4, 5, 7, 9 See Turns, Chapter 2 See Kuo, Chapters 1, 2 This chapter will further develop notions associated with the thermodynamics of chemical reactions. The focus will be on single chemical reactions. 5.1 Molecular mass The molecular mass of a molecule is a straightforward notion from chemistry. One simply sums the product of the number of atoms and each atom’s atomic mass to form the molecular mass. If one defines L as the number of elements present in species i , φ li as the number of moles of atomic element l in species i , and M l as the atomic mass of element l , the molecular mass M i of species i M i = L summationdisplay l =1 M l φ li . (5.1) In vector form, one would say M T = M T · φ , or M = φ T · M . (5.2) Here M is the vector of length N containing the molecular masses, M is the vector of length L containing the elemental masses, and φ is the matrix of dimension L ×
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