Chapter 2 Alkanes

Alkanes Hydrocarbons: molecules that contain H & C only Others: alkens and alkynes (chapter 3) Saturated hydrocarbon No double bond or triple bond General formula: Cn H2n+2

Alkanes Drawing alkanes Carbon has to have 4 bonds 1st: Draw carbon back bond 2nd: fill available valence w/ H-bonds

Alkanes E.g CH4

Alkanes E.g C4H10

Alkanes Isomers: structures that differ only in arrangement of carbon chain Same MW Differ m.p, reactivity

Alkanes Is this a skeletal isomer of C4H10?

Alkanes E.g Draw all possible isomers for the following molecules C5H12 C6H14

Alkanes Cycloalkanes Still a saturated hydrocarbon General formula: CnH2n E.g C3H6 C5H10

Alkanes Structural Representations