Chem 121 Module 7
Alkane - (correct Answer) - - Contain single bonds
- CnH2n+2
Alkene - (correct Answer) - - Contain double bonds
- CnH2n
Alkynes - (correct Answer) - - Contain triple bonds
- CnH2n-n
Rules for naming IUPAC - (correct Answer) - 1. Name the longest continuous chain of carbons using the
names to indicate the # of carbons
- If a cycloalkane, cylo- then the abbreviated geometric shape that indicates the # of carbons
2. Add a suffix to indicate the type of compound/ Alkane= -ane, Alkene= -ene, Alkyne= -yne, Aromatic= -
benzene
3. Name all substituents by using base names to indicate the # of carbons in the substituent, then add
the suffix -yl
4. If more than 1 substituent present indicate by using Di (2), Tri (3), Tetra (4), Penta (5)...
5. Use numbers to describe the location of the substituents by counting from the end that gives the
lowest #
- For Alkenes and Alkynes the number describes the location of the double or triple bond
Names that indicates the # of carbons - (correct Answer) - 1C= Meth
2C= Eth
3C= Prop
4C= But
5C= Pent
6C= hex
7C= Hept
8C= Oct
9C= Non
10C= Dec
Alkane - (correct Answer) - - Contain single bonds
- CnH2n+2
Alkene - (correct Answer) - - Contain double bonds
- CnH2n
Alkynes - (correct Answer) - - Contain triple bonds
- CnH2n-n
Rules for naming IUPAC - (correct Answer) - 1. Name the longest continuous chain of carbons using the
names to indicate the # of carbons
- If a cycloalkane, cylo- then the abbreviated geometric shape that indicates the # of carbons
2. Add a suffix to indicate the type of compound/ Alkane= -ane, Alkene= -ene, Alkyne= -yne, Aromatic= -
benzene
3. Name all substituents by using base names to indicate the # of carbons in the substituent, then add
the suffix -yl
4. If more than 1 substituent present indicate by using Di (2), Tri (3), Tetra (4), Penta (5)...
5. Use numbers to describe the location of the substituents by counting from the end that gives the
lowest #
- For Alkenes and Alkynes the number describes the location of the double or triple bond
Names that indicates the # of carbons - (correct Answer) - 1C= Meth
2C= Eth
3C= Prop
4C= But
5C= Pent
6C= hex
7C= Hept
8C= Oct
9C= Non
10C= Dec
