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Organic Chemistry F. Groups
Organic Chemistry Functional Groups and other facts
45
Science
11th Grade
11/01/2008

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Term
Alcohol
Definition
R-OH
remove the -e at the end and put -ol in its place
Term
Halogenoalkanes
Definition
R-X (X=Halogen (Cl, Br, etc) add halogen to beginning, Fluoro-, Chloro- Bromo- Iodo-
Term
Aldehydes
Definition
R-CHO
remove -e and put -al
Term
Ketones
Definition
R-COR' (R' is another functional group)
Remove -e and put -one
Term
Carboxylic Acid
Definition
R-COOHremove -e and put -oic acid
Term
Ester
Definition
R-COOR' (R' is another functional group)
Remove -e and put -oate
Term
Amines
Definition
R-NH2
Change Methane to Methyl and add -amine to the end (methane is an example)
Term
Aromatic Compounds
Definition
R-, represents an ARYL GROUP, contains a benzene ring (the circular loopy carbon chain thing)
Term
Physical Properties of Alkanes
Definition
not soluable, low melt and boiling point
Term
Physical Properties of Polar Function Group
Definition
more polar they are the greater the melting and boiling point, more soluable in water they are
Term
Intermolecular Forces Of Attraction (alkanes)
Definition
Alkanes: van der waals', very low bp, non soluable
Term
Intermolecular Forces of Attraction (halogenoalkanes)
Definition
Weak Dipole-dipole, low bp, non soluable in water
Term
Intermolecular Forces of Attraction (aldehydes)
Definition
dipole-dipole, moderate bp, soluable in water
Term
Intermolecular Forces of Attraction (alcohols)
Definition
Hydrogen bonding, high bp, soluable in water
Term
Intermolecular Forces of Attraction (carboxylic acids)
Definition
Hydrogen bonding, high bp, soluable in water
Term
Intermolecular Forces of Attraction (ketones)
Definition
Dipole-dipole, moderate bp, soluable in water
Term
Volatile liquid
Definition
liquid with a high vapour pressure and readily evaporates at low temperature *GENERALLY REFERS TO LIQUIDS THAT EVAPORATE BELOW 100 DEGREES C* (below bp of water)
Term
Alkanes (basics)
Definition
Non soluable in water, low bp for atomic mass, a chain of carbons for "spine" with Hydrogens surrounding it. Ending is -ane.
Also, they burn well.
Term
Catenation
Definition
Ability to form chains and rings
Term
Homologous series
Definition
series in which all members have the same formula
Term
Structural Isomers
Definition
two or more compounds have same molecular but different STRUCTURAL formula
Term
Methyl Group
Definition
-CH3 group, formed by removing 1 hydrogen from methane. This is true of all Alkanes, remove 1 hydrogen from Butane and you get Butyl
Term
Paraffin waxes
Definition
solid Alkanes at room temp, not very reactive
Term
Boiling Point of Alkanes
Definition
low for their molar mass, b/c electronegativit values for carbon and hydrogen are similar, and so they are either non-polar or very low polarity. BP and MP raise as carbons are added because Van der Waals' force rises with molar mass
Term
Paraffins
Definition
old name for alkanes, means Little Activity (from the Latin Parum Affinis)
Term
Complete Combustion (Octane)
Definition
products: Carbon Dioxide and water
formula: 2C8H18(l) + 25O2(g) --> 16CO2 + 18H2O(l)
Term
Incomplete Combustion
Definition
Products: Carbon Monoxide, Carbon, water, carbon dioxide
example reaction: C8H18(l) + 9O2 --> C(s) + 5CO(g) + 2CO2 (g) + 9H2O(l)
Term
Methane + Halogen Reaction
Definition
CH4(g) + Cl2(g) + UV Rays --> CH3Cl(g) +HCl(g)
Term
Reaction Mechanism
Definition
Describes the reaction
Term
Free Radical Substitution
Definition
Reaction involving the removal of a hydrogen atom from a carbon chain and its replacement by a free radical
Term
Initiation Step
Definition
First step in a Free Radical Substitution, involves the formation of free radicals
Term
homolytic fission
Definition
bonds break to create free radicals
Term
heterolytic fission
Definition
bonds break to form a positive and a negatively charged atom
Term
Free Radicals
Definition
unpaired electron in one of the orbitals, highly energetic and reactive
Term
propagation steps
Definition
radicals react and generate new radicals
Term
termination steps
Definition
a step that ends the free radical propagation steps and instead removes the free radicals from the equation and ends the reaction
Term
Functional Group
Definition
things that go after the R- to complete the compound
Term
Alkyl
Definition
change the end to -yl
formed when a hydrogen is removed from an alkane
Term
Alkenes
Definition
alkanes with a carbon to carbon double bond, general formula is C(n)H(2n).
Named by taking the longest carbon chain then specifying where the double bond begins
Term
Alkenes (Physical Properties)
Definition
Similar to Alkanes, either non polar or low polarity, low bp, insoluable in polar solvents
Term
Alkenes (burning)
Definition
alkenes burn in excess oxygen to give carbon dioxide and water for complete combustion
limited oxygen, burn yelow and sooty
Term
Alkenes (chemical)
Definition
unsaturated, because the double bond can be broken
can be changed to Alkanes in the presence of hydrogen and a nickel catalyst at a temperature of 180 degree C
Term
Alkenes (Halogenation)
Definition
React with halogens to produce the di-substituted product. Ethene + Bromine makes 1,2-dibromoethane (rips off two hydrogens and replaces them)
Term
Alkenes (hydrogen halides)
Definition
hydrogen halides react with alkenes to form the addition product. Ethane + hydrogen Chloride forms chloroethane.
(basically breaks the double bond and adds on, (hydrogen chloride is HCl) the H goes on one part of the broken double bond and the Cl on the other.)
Term
Alkenes and Water
Definition
Usually doesnt mix, but if concentrated sulfuric acid is used, then hydrogen sulfate addition product is formed (basically breaks the double bond and the H bonds to one part and the OSO3H bonds to the other part of the now broken double bond, then that compound mixes with water to form ethanol and H2SO4 (example on page 201)
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