Question:
How many bromo products are formed when ethane is reacted with excess of Br2 on heating?
How many bromo products are formed when ethane is reacted with excess of Br2 on heating?
Updated On: Nov 21, 2025
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Correct Answer: 9
Solution and Explanation
Reaction Overview:
When ethane (C2H6) is reacted with excess bromine (Br2) under heating, substitution reactions occur, replacing hydrogen atoms with bromine atoms. This leads to multiple brominated products.
Step-by-Step Explanation:
- Monobromo Product:
- Only one product: C2H5Br (Bromoethane).
- Dibromo Products:
- Two possible isomers:
- 1,1-Dibromoethane (both Br atoms on the same carbon).
- 1,2-Dibromoethane (Br atoms on different carbons).
- Two possible isomers:
- Tribromo Products:
- Three possible isomers:
- 1,1,1-Tribromoethane.
- 1,1,2-Tribromoethane.
- 1,2,2-Tribromoethane.
- Three possible isomers:
- Tetrabromo Products:
- Two possible isomers:
- 1,1,1,2-Tetrabromoethane.
- 1,1,2,2-Tetrabromoethane.
- Two possible isomers:
- Pentabromo Product:
- Only one product: 1,1,1,2,2-Pentabromoethane.
- Hexabromo Product:
- Only one product: C2Br6 (Hexabromoethane).
Total Number of Products:
Adding all the possible isomers:
- Monobromo: 1 product
- Dibromo: 2 products
- Tribromo: 3 products
- Tetrabromo: 2 products
- Pentabromo: 1 product
- Hexabromo: 1 product
Total = 1 + 2 + 3 + 2 + 1 + 1 = 9 products.
Conclusion:
The total number of bromo products formed is 9.
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Concepts Used:
Hydrocarbons
Hydrocarbons can be described as organic compounds that consists only hydrogen and carbon atoms. These compounds are of different types and thereby have distinct natures. Hydrocarbons are colorless gases and are known for discharging faint odours. These have been categorized under four major classes named as alkynes, alkanes, alkenes, and aromatic hydrocarbons.
Types of Hydrocarbons
- Saturated hydrocarbons - Saturated hydrocarbons are those compounds where there is a single bond exists between carbon atoms and are saturated with atoms of hydrogen.
- Unsaturated hydrocarbons - Hydrocarbons comprises of at least one double or triple bond between carbon atoms are known as unsaturated hydrocarbons.
- Aliphatic hydrocarbons - The term denotes the hydrocarbons formed as an outcome of the chemical degradation of fats. Aliphatic hydrocarbons are basically chemical compounds.
- Aromatic hydrocarbons - They are distinguished because of the presence of benzene rings in them. They give away distinct types of aroma. These hydrocarbons comprises of only hydrogen and carbon atoms.