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Ethane: C2H6, CH3CH3<br />
2.1 Alkanes — Nomenclature<br />
IUPAC Rules for Naming Alkanes<br />
1. Name the longest continuous chain.<br />
2. Name groups attached to this chain.<br />
3. Number the carbon’s in this chain. (so that side groups<br />
are given smallest number possible)<br />
4. Designate each group with correct number and name.<br />
5. Assemble name, listing groups in alphabetical order.<br />
Structural formula Line formula Formula<br />
name<br />
CH4<br />
Methane<br />
C2H6<br />
Ethane<br />
C3H8<br />
Propane<br />
C4H10<br />
Butane<br />
C5H12<br />
Pentane<br />
C6H14<br />
Hexane<br />
Condensed formula<br />
CH4<br />
CH3CH3<br />
CH3CH2CH3<br />
CH3CH2CH2CH3<br />
CH3CH2CH2CH2CH3<br />
CH3CH2CH2CH2CH2CH3