click below
click below
Normal Size Small Size show me how
O. Chem. Chap. 11
Functional Groups
Question | Answer |
---|---|
Organic Compounds | Contain C, H & sometimes other elements O, N, Halogens, P, S |
C always has how many covelant bonds | 4 - 4 single, 1 single/1 triple, 2 single/1 double, 2 doubles |
H is ALWAYS | TERMINAL! |
Tetrahedral bond angle | 109.5 |
A C atome in a molecule can be bonded to how many other atoms? | 2, 3, or 4 |
Bond angle of C and 2 atoms? | Linear 180 |
Bond angle of C and 3 atoms? | Triangular planar 120 |
Bond angle of C and 4 atoms? | Tetrahedral 109.5 |
C-H bond is polar or nonpolar? | Nonpolar |
Elecronegativity | C-F>C-O>C-N; F>O>N~Cl>C~H |
The polarity of a molecule is determined by? | Polarity of the bonds AND the symmetry of the molecule |
To be polar, a molecule must contain what? | At least 1 polar bond AND be assymetrical (different around the center = polar) |
Properties of Organic Compounds: | Covelant Bonds, Low MP & BP, Flammable, Low solubility in H20 (depend on size & polarity), Weak or Nonelectrolytes |
Properties of Inorganic Compounds | Ionic &/or Covelant, some very high MP & BP, not flammable, most soluble in H2O, strong or weak electrolytes |
Characteristics of Functional Groups: | Cmpds within same functional group undergo similar rxns. Organic cmpds classified/identified by their functional group |
Alkanes | A. Saturated hydrocarbons (no more H) B. All C-C single bonds C. Unreactive except flammable |
Hydrocarbon | Contains only H & C - HC |
Alkenes | A. Contain 1+ C=C B. Unsaturated HCs C. More reactive than Alkanes |
Alkynes | A. Contain 1+ C=_C (triple bond) B. Unsaturated C. Reactive |
Alcohols & Ethers | contain O - all single bonds. H-O-H or C-O-C |
Alcohol | Contain OH: C-OH |
Ethers | Contain C-O-C |
Aldehydes & Ketones | Contain a Carbonyl group C=O |
Aldehyde | H-C=O |
Ketones | Carbonyl group (C=O) between C atoms |
Carboxylic Acid | Carboxyl group (C=O - OH) |
Ester | Carboxyl group with -H replaced by a C (C=O - O - C) |
Acids & Esters | Contain a carboxyl group |
Amines | Amines are NH3 - H substituted with a C (CH3 - NH2) |
Amide | Carbonyl Group bonded to a N (C=O - N) |
Isomerism | Cmpds have same molecular formula but differ in their structural formulas |
Structural Isomer | Differ in the SEQUENCE of the atoms - as the # of atoms in a molecule increases the # of structural isomers increases |