WHAT ARE THE RAW MATERIALS REQUIRED FOR THE MANUFACTURE OF TETRAOXOSULPHATE (VI) ACID BY THE CONTACT PROCESS
The manufacture of tetraoxosulphate (VI) acid, commonly known as sulfuric acid, involves several raw materials in the contact process. These raw materials are essential for the production of this important industrial chemical. The primary raw materials required for the manufacture…
EUROPEAN CONTACT WITH WEST AFRICA
European sailors first reached sub-Saharan Africa in 1442, when Portuguese ships reached the Senegal river. The Portuguese had been sailing the coasts of Morocco and Western Sahara since 1413, when they captured the Moroccan city of Ceuta [still a Spanish…
EARLY EUROPEAN CONTACT WITH NIGERIA
The first European travelers to reach Benin in about 1485 were the Portuguese. The nature of the relationship with Europeans at the early stages of their visits was difficult to define. From the beginning, the first group of European visitors…