In 1767, Swedish chemist Torbern Bergman synthesized alum by boiling alunite in sulfuric acid and adding potash to the solution. He also synthesized alum being a reaction product concerning sulfates of potassium and earth of alum, demonstrating that alum was a double salt. In the primary phase of aluminium output https://cesartsplg.humor-blog.com/28081047/aluminium-secrets