Alkene Preparation Quiz

What is the main difference between elimination and addition reactions?

• Elimination reactions only occur in the presence of light, while addition reactions do not.

• Elimination reactions involve the addition of water, while addition reactions involve the removal of water.

• Elimination reactions add groups to a pi bond, while addition reactions remove them.

• Elimination reactions remove groups from adjacent carbons, forming a pi bond, while addition reactions add groups to a pi bond.

What is required for a dehydrohalogenation reaction to occur?

• A solvent like water

• A catalyst like platinum

• A strong base like potassium hydroxide

• A strong acid like sulfuric acid

In dehydrohalogenation, what happens to the electrons in the carbon-hydrogen bond?

• They are absorbed by the solvent.

• They are lost as heat.

• They are used to form a new pi bond.

• They are transferred to the halogen atom.

What is the initial step in the dehydration of alcohols?

• Formation of a pi bond

• Removal of a halogen

• Protonation of the hydroxy group

• Addition of a water molecule

What is the byproduct of a dehydration reaction?

• Water

• Oxygen gas

• Carbon dioxide

• Hydrogen gas