CHEM 1050 Lecture Notes - Lecture 32: Smog, Reaction Rate Constant, Aldehyde

• School: University of Guelph
• Department: Chemistry
• Course: CHEM 1050
• Professor: Mario Monteiro

Document Summary

Ozone destruction due to vortex effect (over antarctica) - very cold. Cl + cl helps destroy ozone, leading to the ozone holes over the poles formation of no from combustion of coal and gasoline. N2 (g) + o2 (g) 2no(g) it is a combustion reaction at 25 c: no is not formed, but at higher temps (2500 c), sme no is formed. Creation of smog because of no and oh radical. N2 + o2 no2 + h2o no + 2 oh r- ch2 (oxidation of hydrocarbons //unburned fuel) (+o2) r-ch2-o-o r-c=o -h (aldehyde) small liquid droplets aerosol / smog [only during daylight] Smog is yellow due to the no2. Only molecules with a dipole moment can trap infrared (ir energy therefore, only these types of molecules (h2o, co2, ch4) can act as greenhouse gasses: h-o-h o=c=o (and c with 4 h"s around it)