Question

Primary alcohols undergo what reaction to form alkenes?
Select one:
A. Oxidation
O B. Elimination
O C. Hydrolysis
D. Reduction​

Answer 1

Answer:

Upon elimination or dehydration, the primary alcohols form alkenes. Explanation: Ketones in the presence of NaBH4 undergoes reduction to form secondary alcohols.

Answer 2

Primary alcohols undergo (B) Elimination to form alkenes.

Elimination Reaction:

• Elimination reactions are reactions that remove two substituents from a molecule. It can take place in either a one- or two-step mechanism.
• The one-step mechanism is called an elimination reaction E2 and the two-step mechanism is called an elimination reaction E1.
• It occurs when carbon with an OH group reacts with an acid such as phosphoric acid.
• Elimination of water from any alcohol is known as Dehydration.

Primary alcohols undergo E2 Reactions and secondary and tertiary alcohols undergo E1 Reactions.

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