Hydrohalogenation and Alkene Addition Reactions Quiz

What is the main characteristic of Markovnikov addition in hydrohalogenation?

• Halogen adds to the less substituted carbon.

• Halogen adds to the more substituted carbon.

• Hydrogen adds to the less substituted carbon.

• Hydrogen adds to the more substituted carbon.

Which of the following is true about the stereoselectivity of standard hydrohalogenation?

• It only forms racemic mixtures.

• It has no stereoselectivity.

• It is highly stereoselective.

• It always forms chiral centers.

During the hydrohalogenation mechanism, what role does the alkene play?

• Electrophile

• Nucleophile

• Radical

• Catalyst

What is a key feature of the carbocation intermediate in hydrohalogenation?

• It is always stable.

• It can rearrange to form a more stable carbocation.

• It is not involved in the reaction.

• It forms a radical.

In the presence of peroxides, how does HBr behave differently in hydrohalogenation?

• It does not react.

• It follows anti-Markovnikov's rule.

• It forms a carbocation.

• It follows Markovnikov's rule.

What type of mechanism does HBr with peroxides follow?

• Radical mechanism

• Nucleophilic substitution

• Carbocation mechanism

• Electrophilic addition

When a chiral center is formed in hydrohalogenation, what is typically produced?

• Only one enantiomer

• A racemic mixture

• Only the R enantiomer

• Only the S enantiomer

How can the stereochemistry of a chiral center be represented in hydrohalogenation products?

• By ignoring stereochemistry

• By drawing both enantiomers

• By using plus and minus signs

• By drawing only one enantiomer

What is the significance of drawing both enantiomers in hydrohalogenation?

• It simplifies the reaction mechanism.

• It indicates the formation of a racemic mixture.

• It highlights the formation of a single product.

• It shows the reaction is stereospecific.

Why might some professors prefer to use plus and minus signs to represent enantiomers?

• It is required by all professors.

• It is a simpler representation.

• It is less common.

• It is more accurate.