When ethane undergoes a substitution reaction, one or more hydrogen atoms in the molecule are replaced by other atoms or groups. One example of a substitution reaction involving ethane is the reaction with chlorine (Cl2) to form chloroethane (C2H5Cl) and hydrogen chloride (HCl):

C2H6 + Cl2 → C2H5Cl + HCl

In this reaction, a chlorine atom replaces one of the hydrogen atoms in ethane, resulting in the formation of chloroethane and hydrogen chloride as byproducts.

It's important to note that ethane can undergo various other substitution reactions with different reagents, resulting in the replacement of hydrogen atoms with different atoms or groups. The specific reaction conditions and reagents used will determine the nature of the substitution products.

When ethane (C2H6) reacts with bromine water (Br2(aq)), no significant reaction occurs. Ethane is a saturated hydrocarbon and does not contain a carbon-carbon double bond. As a result, it does not undergo an addition https://bbgate.com/tags/nitroethane/ reaction with bromine water. Bromine water is typically used as a test for unsaturated hydrocarbons like alkenes and alkynes, which can decolorize the bromine water due to their ability to undergo addition reactions.

On the other hand, unsaturated hydrocarbons like ethene (C2H4) can react with bromine water. The double bond in ethene allows it to undergo an addition reaction with bromine, resulting in the decolorization of the bromine water. The reaction proceeds through the formation of a cyclic intermediate called a bromonium ion.

To summarize, ethane does not react significantly with bromine water, while ethene can decolorize bromine water due to its unsaturated nature.