In an addition reaction of HBr to an alkene, what is the major product when the

Practice Questions

Q1
In an addition reaction of HBr to an alkene, what is the major product when the alkene is asymmetric?
  1. The product with the bromine on the more substituted carbon.
  2. The product with the bromine on the less substituted carbon.
  3. A racemic mixture of products.
  4. No reaction occurs.

Questions & Step-by-Step Solutions

In an addition reaction of HBr to an alkene, what is the major product when the alkene is asymmetric?
  • Step 1: Identify the alkene. An alkene is a type of hydrocarbon that has a double bond between two carbon atoms.
  • Step 2: Determine if the alkene is asymmetric. An asymmetric alkene has different groups attached to the carbon atoms involved in the double bond.
  • Step 3: Apply Markovnikov's rule. This rule states that when HBr adds to an asymmetric alkene, the hydrogen (H) will attach to the carbon with fewer substituents (less substituted carbon).
  • Step 4: Identify the more substituted carbon. This is the carbon that has more groups or atoms attached to it.
  • Step 5: Attach the bromine (Br) to the more substituted carbon. This means that after the reaction, the hydrogen will be on one carbon and the bromine will be on the other carbon.
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