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# Explain hydrogenation with an example.

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## Hydrogenation:A chemical reaction between molecular hydrogen and an element or compound, ordinarily in the presence of a catalyst is called hydrogenation.In hydrogenation, hydrogen gets attached to a double or triple bond connecting two atoms in the structure of the molecule.Generally, the catalyst used in hydrogenation are $\mathrm{Ni},\mathrm{Pd},\mathrm{Pt}$.Hydrogenation is generally carried out at lower temperatures.It is used to preserve raw materials or ingredients such as Alcohol, Ammonia, various polymers, etc.Hydrogenation is a process used to convert vegetable oil from a liquid to a solid or semi-solid fat.Example: Hydrogenation of Cyclohexene$\left({\mathrm{C}}_{6}{\mathrm{H}}_{10}\right)$ to Cyclohexane$\left({\mathrm{C}}_{6}{\mathrm{H}}_{6}\right)$$\underset{\mathrm{Cyclohexene}}{{\mathrm{C}}_{6}{\mathrm{H}}_{10}}+\underset{\mathrm{Hydrogen}}{{\mathrm{H}}_{2}}\stackrel{\mathrm{Pd}}{\to }\underset{\mathrm{Cyclohexane}}{{\mathrm{C}}_{6}{\mathrm{H}}_{12}}$

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