IG Chem – Reactions of Alkene

Cracking is a process used to break down large alkane molecules into smaller ones.

Catalytic cracking requires a high temperature and a catalyst of silica or alumina.

Butane (C₄H₁₀) is a product of cracking decane (C₁₀H₂₂).

Propene (C₃H₆) can be produced from the cracking of decane.

The percentage of gasoline produced from fractional distillation of petroleum is typically 9%.

LPG (liquefied petroleum gas) has the highest boiling point among petroleum fractions.

Ethene reacts with bromine water to form 1,2-dibromoethane.

Ethene reacts with hydrogen in the presence of a nickel catalyst to form ethane.

Ethene reacts with steam to form ethanol, using phosphoric acid as a catalyst.

Saturated fats have at least one double bond in their molecular structure.

A diet high in saturated fat can increase the risk of heart disease.

Unsaturated fats are found in foods like oily fish, nuts, and seeds.

Margarine is made from vegetable oil whose unsaturated molecules have been saturated with hydrogen.

Saturated fats are typically found in meat products, butter, and cheese.

Cracking does not produce any alkenes.