How much heat is absorbed (in kilojoules) during production of 127 g of NO by the combination of nitrogen and oxygen?
\(\mathrm{N}_{2}(g)+\mathrm{O}_{2}(g) \longrightarrow 2 \mathrm{NO}(g) \quad \Delta H=+180 \mathrm{~kJ} / \mathrm{mol}\)
Text Transcription:
N_2(g)+ O_2(g) longrightarrow 2 NO (g) quad/Delta H=+180~kJ/mol
Rachel Ferrell CHEM 1030 3/21-‐3/24 Chapter 7: Molecular Geometry: • Valence Shell Electron Pair Repulsion Model (VSEPR) Model o AB x o A= central atom o X= can be any integer 2-‐6 • Basic idea of model→electrons repel each other, therefore they will arrange themselves to be as far apart as possible from each other • Creates Electron Domains, which can be… o Lone pairs o Single bonds o Double bonds o Triple bonds • Electron domain geometry= arrangement of electron domains around a central atom o Assuming that the electron domains are all bonds and not lone pairs… o 2 electron domains→ linear o 3 electron domains→ trigonal planar o 4 electron domains→ tetrahedral o 5 electron domains→ trigonal bipyramidal o 6 electron domains→ octahedral • Molecular geometry= arrangement of bonded atoms o Is not always the same as electron domain geometry o Electron domain geometry is used t
