Found 12 Articles for Fire Extinguisher

Introduction Jöns Jakob Berzelius, the Swedish chemist proposed the concept of isomerism and allotropes. The concept of allotropy was proposed in the year 1841. The allotropes of Oxygen in the O2 and O3 has been found in the year 1860. In 1827 the property of isomerism was first noticed and was made by the preparation of cynic acid by Friedrich Woehler. Since the properties of cyanic acid are different from fulminic acid even though both have the same elemental composition. After some additional discoveries made by Woehler that urea and ammonium cyanate were the same, Jöns Jakob Berzelius introduced the ... Read More

Introduction Substitution reactions take place when 1 functional group in a chemical particle is substituted by another functional group. It is also referred to as a single displacement & perhaps a single substitution reaction. These reactions are critical in inorganic chemistry. This reaction occurs in organic compounds or aromatic hydrocarbons. These reactions aid in the preservation of the aromaticity of aromatic compounds. In these reactions, the hydrogen (H) atom of a benzene ring with an electron-accepting reagent is substituted. Electrophilic Aromatic Substitution Reaction These reactions take place when an electron-accepting reagent substitutes an atom attached to an aromatic ring. ... Read More