Chem- organic Flashcards
are alkanes polar (yes/no)
Low/high BP
Uses
no
low
fuels such as octane methane and propane
are alkenes polar (yes/no)
Low/high BP
Uses
no
slightly lower than alkanes (double bond reduces # of electrons)
used to make polymers in some hormones
are alkynes polar (yes/no)
Low/high BP
Uses
no
higher compared to alkanes (they have a linear shape so the triple bond doesn’t reduce the number of e-)
used as fuels
are Cyclic Hydrocarbons polar (yes/no)
Low/high BP
Uses
no
slightly high due to planar ring structure
Make up steroids and hormones
are aromatics polar (yes/no)
Low/high BP
Uses
benzene is non polar
bp similar to aliphatics (planar ring structure)
benzene is found in hormones, rubber, paint
are alcohols polar (yes/no)
Low/high BP
Uses
very polar
Higher BP than alkynes bc of OH which can cause HB
Fuels, booze
when do non polar characteristics in alcohols begin to take over
when the chain gets larger than 4 carbons (when its 4 C or less its soluble in water)
when OH is attached to an benzene ring its called a ___
Phenol
are alkyl Halides polar (yes/no)
Low/high BP
Uses
Can form polar bonds, but don’t form HB therefore not soluble in water
/
propellants In spray cans- herbicides, insecticides
are carboxylic acids polar (yes/no)
Low/high BP
Uses
Very polar with HB this soluble in water of <4C
BP higher than other compounds with the same # Cs
Vinegar, food preservative, flour
are Esters polar (yes/no)
Low/high BP
Uses
c=o is polar
BP lower then alc and acids
fragrances (perfumes) and flavouring agents
Polar organic molecules aren’t always soluble in water.. why?
No hydrogen bonding is present
In fractional distillation where do hydrocarbons with a low/high BP go
Low go to the top
high go to the bottom
what are the exceptions to which benzene is considered a branch
- if benzne is connected to an aliphatic chain on a non terminal end
- if alipatic chain has a double or triple bond
- if the aliphatic chain contains other branch/alkyl groups
- if the parent chain contains more then 6 carbons
