What is the nomenclature for ch3-ch2-ch2-ch2-ch2-ch3?

Answer 1

The molecule you have described (C8H18) is Octane. The number of carbon atoms in the longest molecule chain give the first part of the IUPAC name.

C Atom Number - First Part

1 ---------------------Meth

2 ---------------------Eth

3 ---------------------Prop

4 ---------------------But

5 ---------------------Pent

6 ---------------------Hex

7 ---------------------Hept

8 ---------------------Oct

Type of Molecule - Suffix

Alkane ----------------ane

Alkene ----------------ene

Alcohol ----------------anol

Ketone ---------------one

Aldehyde -------------anal

Carboxylic Acid ------oic Acid