Organic Chemistry - Hydrocarbons: Aromatic

Question 1

aromatic hydrocarbons

Answer 1

• presence of benzene ring system

- three alternating double bonds in a six-membered ring

Question 2

characteristics of the benzene ring

Answer 2

1. all carbon-carbon bonds are identical in length and strength (not three single or three double as might be expected)
2. does not undergo addition reactions (unlike alkenes)
3. unusually stable

Question 3

nomenclature for aromatic rings monosubstituted benzene ring

Answer 3

• name for substituent followed by -benzene

Question 4

disubstituted benzene rings

Answer 4

• positions on the ring are
• 1,2 or termed ortho
• 1,3 is termed meta
• 1,4 is termed para

Question 5

trisubstituted and ?-substituted benzene rings

Answer 5

• all substituents are numbered to give lowest number combination

Question 6

chemical and physical properties of aromatic compounds

Answer 6

• non-polar, immiscible with water

- aromatic ring, low chemical reactivity

Question 7

a benzene ring has _____ alternating double bonds in a _____-membered ring

Answer 7

• 3,6