A subduction zone is also generated when two oceanic plates collide â the older plate is forced under the younger one â and it leads to the formation of chains of volcanic islands known as island arcs. Examples include the Mariana Islands in the western Pacific Ocean and the Aleutian Islands, off the coast of Alaska.
Gabriel Synthesis. Gabriel Synthesis is an organic chemical reaction in which primary alkyl halides are transformed into primary amines using potassium phthalimide. This reaction is named after a German chemist Siegmund Gabriel.Pure primary aliphatic amines are prepared from alkyl halides by this method.abriel Synthesis. Gabriel Synthesis is an organic chemical reaction in which primary alkyl halides are transformed into primary amines using potassium phthalimide. This reaction is named after a German chemist Siegmund Gabriel.
The Reaction of Oxygen with Sulfur Dioxide to make Sulfur Trioxide. Sulfur dioxide is made by reacting sulfur with oxygen. Sulfur dioxide can be made to react with more oxygen to make sulfur trioxide. This is another example of oxidation. The reaction is reversible (shown by the arrow). The forward reaction (from left to right) is exothermic. This is the balanced chemical equation for the reaction of sulfur dioxide with oxygen. sulfur dioxide + oxygen sulfur trioxide.