This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: Atomization Reactions Note that atomization reactions discussed on page 82 are simply another sort of defined reaction type, not dissimilar to combustion, formation, etc. If you consider a generic compound X a Y b Z c where X, Y, Z are elements and a, b, c are the subscript values in the formula, then the atomization reaction is defined: ( 29 ( 29 ( 29 ( 29 g cZ g bY g aX g Z Y X c b a + + where all the components are in the gas phase . As for any reaction, H rxn can be expressed in terms of H f if those data are available. Please note that atoms such H, F, etc., namely the single atoms of elements whose standard state form are diatomic molecules, have H f values that are not zero. So, for example, consider the atomization of acetylene ( C 2 H 2 ) HCCH: ) ( 2 ) ( 2 ) ( 2 2 g H g C g H C + where we note that we really mean two Hatoms, not a single molecule of diatomic molecular hydrogen, H 2 ....
View
Full
Document
 Fall '07
 Warren
 Chemistry, Atom, Reaction

Click to edit the document details