Chemistry

Dependence of the reaction velocity on the temperature I(acetic acid - magnesium)

Fractional petroleum distillation

Explosion limits of a petrol-air mixture

Cracking of hydrocarbons

Alkenes: determination of molar mass and detection withBaeyer's reagent

Preparation of ethylene (ethene)

Electrophilic addition of bromine to acetylene (ethyne)

Principle
When bromine reacts with ethine (acetylene), the first step is the production of trans-1,2-dibromoethene. When more bromine is added, this reacts to form 1,1,2,2-tetrabromoethane. As a by-product of this reaction, cis

Preparation of p-toluenesulfonic acid

Production of anhydrous ethanol - density determination

Aldehydes - reactions with ammonia

Ester saponification

Tyndall effect in macromolecules

Properties of plastics (2): determination of the density of plastics

Step-growth polymerisation (2): production of nylon

Principle

The reaction of sebacoyl chloride with hexamethylenediamine forms Nylon 610^®. The two components are dissolved in two solvents of different density which do not mix with one another. For this reason, a reaction can take place only at the contact su ...

Polyaddition (2): formation of polyurethane

Principle

The reaction of dialcohols with diisocyanates forms polyurethane. This is an example of a polyaddition reaction. The reaction releases heat which causes a foaming agent (water) to foam up the plastic that is formed.