4.1 Basic Concepts and Hydrocarbons

A chemist reacts the following compound with hydrogen bromide, HBr. What is the name of the major product?

• 2-Bromo-3-methylbutane

• 2-Bromo-2-methylbutane

• 3-Bromo-3-methylbutane

• 3-Bromo-2-methylbutane

What is the systematic name of the compound below?

• 2-Ethylpentan-4-one

• 4-Ethylpentan-2-one

• 3-Metylhexan-5-one

• 4-Methylhexan-2-one

Which term(s) best describe(s) the following molecule?
1. Aromatic

2. 2. Unsaturated

3. 3. Alicyclic

• 1,2 and 3

• Only 1 and 2

• Only 2 and 3

• Only 1

What is the systematic name of the compound below?

• E-2-bromobut-2-ene

• Z-2-bromobut-2-ene

• E-1,2-dimethyl-1-bromoethene

• z-1,2-dimethyl-1-bromoethene

The skeletal formula of an organic compound is shown below. What is the molecular formula of the organic compound?

• C6H10O2

• C6H11O2

• C6H12O2

• C6H13O2

How many structural isomers have the molecular formula C5H12?

• 2

• 3

• 4

• 5

The structure of naphthalene is shown below. What is the molecular formula of naphthalene?

• C10H8

• C10H10

• C12H10

• C12H12

What is the name of the compound shown here?

• 3-Propylpent-2-ene

• 3-Propylpent-3-ene

• 3-Ethylhex-2-ene

• 4-Ethylhex-4-ene

Which compound is unsaturated, alicyclic and contains and alkyl group?

• A

• B

• C

• D

Which statement is correct for the two structures below?

• They have the same empirical formula

• They have different relative molecular masses

• They are structural isomers

• They have different functional groups