CHEM 2331H Chapter Notes -Shampoo, Relative Permittivity, Allyl Group
Document Summary
6. 3d) freons: refrigerants and foaming agents: freons (aka chlorofluorocarbons or cfcs): fluorinated haloalkanes that replace ammonia (toxic, leaking refrigerators killed people working/sleeping nearby) as refrigerant gas. Freon-12 in aerosol cans replaced by hydrocarbons/carbon dioxide. Freon-12 in refrigerators replaced by freon-22 (chclf2) b/c have c-h bonds (generally called hcfcs) destroyed @ lower altitudes before reaching stratosphere. Freon-11 replaced in plastic foams by propane, co2, and hcfc-123 (chcl2cf3) 6. 4) structure of alkyl halides alkyl halides: halogen bonded to sp3 hybridized c halogen more electronegative than c. Polarized electronegativities of halogens: i
