What is the major product of the reaction between 1-butene and HBr?
Practice Questions
Q1
What is the major product of the reaction between 1-butene and HBr?
1-bromobutane
2-bromobutane
3-bromobutane
butane
Questions & Step-by-Step Solutions
What is the major product of the reaction between 1-butene and HBr?
Step 1: Identify the reactants. We have 1-butene, which is an alkene with a double bond between the first and second carbon atoms, and HBr, which is hydrogen bromide.
Step 2: Understand Markovnikov's rule. This rule states that when HX (like HBr) adds to an alkene, the hydrogen (H) will attach to the carbon with more hydrogen atoms already attached, while the bromine (Br) will attach to the carbon with fewer hydrogen atoms.
Step 3: Apply Markovnikov's rule to 1-butene. The double bond in 1-butene is between the first and second carbon. The first carbon has 3 hydrogen atoms, and the second carbon has 1 hydrogen atom.
Step 4: Add HBr to the double bond. According to Markovnikov's rule, the hydrogen (H) will attach to the first carbon (C1), and the bromine (Br) will attach to the second carbon (C2).
Step 5: Determine the product. After the addition, we get 2-bromobutane, where the bromine is on the second carbon and the hydrogen is on the first carbon.
