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Hydrogenation Reaction
| Content Provider | AK Lectures |
|---|---|
| Description | Before we get into what the hydrogenation reaction is, let us recall a few import points. Whenever we are breaking a bond, what we are actually doing is moving electrons away from the nucleus. Since the protons in the nucleus and electrons are attracted to one another as per Coulombs Law, we are doing work against this electrostatic force. That is precisely why bond breakage is an endothermic reaction. At the same time, whenever we are forming bonds, we are allowing the electrons to move closer to the nucleus. Therefore as electrons move closer to the nucleus, energy is released into the environment and we say that the reaction is exothermic. Hydrogenation reaction, as the name alludes, is the addition of diatomic hydrogen to an alkene compound in the presence of some sort of catalyst. In this reaction, the pi-bond of the alkene and the sigma bond between the hydrogens breaks while two bonds are formed between the carbon and hydrogen atoms. Although some amount of energy is required to start the process, the overall reaction is exothermic and the bonds formed are more stable than the bonds being broken. However, an important point must be made about the hydrogenation reaction. When no catalyst is used, the energy requirement to start the reaction is simply way too high and no reaction takes place. A catalyst is required in the hydrogenation reaction because it lowers the activation energy barrier, thereby increasing the rate and ease with which the reaction takes place. |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Organic Chemistry reaction carbon pi-bond name hydrogen sort presence point way addition |
| Content Type | Video |
| Educational Role | Teacher Student |
| Educational Use | Self Learning Lecture Reading |
| Resource Type | Video Lecture |
| Education Level | Under Graduate |
| Subject | Physical chemistry |
