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Chapter 2 Alkanes.

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Presentation on theme: "Chapter 2 Alkanes."— Presentation transcript:

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


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