What is hydrogenation of alkenes?

Answer 1

Hydrogenation of an alkene is the addition of H₂ to the C=C double bond of the alkene.

The C=C double consists of a σ bond and a π bond. The π bond is relatively weak, so it can be easily broken.

However, the addition of H₂ has a high activation energy. The reaction will not proceed without a metal catalyst, such as Ni, Pt, or Pd.

The two H atoms add to the same face of the double bond, so the addition is syn. The product is an alkane.

Hydrogenation is used in the food industry to convert liquid oils into saturated fats.

This process yields semi-solid products like shortening and margarine.

Here's a video on the catalytic hydrogenation of alkenes.

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Answer 2

Hydrogenation of alkenes is a chemical reaction in which hydrogen atoms are added across the double bond of an alkene, resulting in the formation of a saturated alkane. This reaction typically occurs in the presence of a catalyst, such as a metal catalyst like palladium or nickel, and under conditions of high pressure and temperature. The addition of hydrogen atoms to the alkene double bond converts it into a single bond, effectively saturating the molecule with hydrogen atoms. This process is commonly used in the food industry to produce saturated fats from unsaturated vegetable oils, as well as in the production of various industrial chemicals.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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