Ethanol to 1, 2-dibromoethane

To convert ethanol to 1,2-dibromoethane, you can follow these steps:

1. Dehydration of Ethanol: The first step is to dehydrate ethanol to produce ethene. This can be done by heating ethanol with an excess of concentrated sulfuric acid at about 170°C.

   Reaction: CH3CH2OH (ethanol) → CH2=CH2 (ethene) + H2O

2. Addition of Bromine: The next step is the addition of bromine to ethene. This is a simple addition reaction where bromine adds across the double bond of ethene to form 1,2-dibromoethane.

   Reaction: CH2=CH2 (ethene) + Br2 → CH2Br-CH2Br (1,2-dibromoethane)

Please note that this is a simplified version of the reactions and in a laboratory setting, you would need to take necessary precautions to handle these chemicals safely.