Chapter 5 Flashcards
how are MeOH and EtOH obtained
from biological sources and are synthetically used in the lab/industry
what is the -OH group the same as
the H-OH group, we will se similarities and differences between ROH and water
how is MeOH manufactured
via “destructive distillation”
- heat wood to 250 C without air
- large molecules of wood degrade to smaller molecules and one is MeOH
called wood alcohol
does MeOH have a high or low bp
low
fun facts about methanol
- toxic to eat
- colorless liquid
how is MeOH collected
via distillation
equation for MeOH
CO + H2 = MeOH
EtOH is in
alcoholic beverages
how is EtOH made
via yeast fermentation of aqueous sugars and starches (corn, rice, potato, grain)
called grain alcohol
what does fermentation of EtOH use
enzymes
equation for EtOH
grain => EtOH & CO2 (enzyme catalyzed
fun facts about ethanol
- can be used as fuel
- less toxic when ingested than methanol
MeOH and EtOH physical similarities
- evaporate easily
- flammable
- less dense than H2O
- miscible with H2O
MeOH, EtOH & H2O
relatively high boiling point
what are polyols
more than one OH group
