What is the major product of the reaction of 1-butene with HBr?
Practice Questions
Q1
What is the major product of the reaction of 1-butene with HBr?
1-bromobutane
2-bromobutane
Butane
Bromobenzene
Questions & Step-by-Step Solutions
What is the major product of the reaction of 1-butene with HBr?
Step 1: Identify the reactant, which is 1-butene. It is an alkene with a double bond between the first and second carbon atoms.
Step 2: Recognize that HBr (hydrobromic acid) will react with the double bond in 1-butene.
Step 3: Apply Markovnikov's rule, which states that when HX (like HBr) adds to an alkene, the hydrogen (H) will attach to the carbon with more hydrogen atoms already (the less substituted carbon).
Step 4: In 1-butene, the first carbon has 2 hydrogen atoms and the second carbon has 1 hydrogen atom. Therefore, H will attach to the first carbon.
Step 5: The Br (bromine) will then attach to the second carbon, which has fewer hydrogen atoms.
Step 6: The product formed is 2-bromobutane, where the bromine is on the second carbon.
