1. Chapter 2
Alkanes

2. 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

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

4. Alkanes
E.g CH4

5. Alkanes
E.g C4H10

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

7. Alkanes
Is this a skeletal isomer of C4H10?

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

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

10. Alkanes
Structural Representations