2-bromobutane heat with 2M NaOH. What is the observation and the chemical reaction for the reaction?

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The reaction that occurs when 2-bromobutane is heated with 2M NaOH is known as an elimination reaction. Specifically, it is an example of an elimination substitution reaction, where a nucleophile replaces a leaving group, and a proton is eliminated at the same time. Here is the chemical equation for the reaction:

2-bromobutane + NaOH ā†’ but-2-ene + NaBr + H2O

Observations:

1. The reaction mixture may become warm or hot due to the exothermic nature of the reaction.
2. A color change may not be observed since both reactants are typically colorless.
3. After some time, the formation of a separate organic layer may be observed since the but-2-ene product is less dense than water.
4. The organic layer may have a noticeable odor, as but-2-ene has a characteristic sweet smell.
5. If the reaction is being conducted in a test tube, effervescence or gas evolution may be observed, indicating the release of carbon dioxide gas.

It is important to note that the reaction should be carried out in a well-ventilated area or under appropriate safety precautions, as the reaction involves toxic and flammable substances.