Which chemical substance is commonly known as 'oil of vitriol'?

💡 Solution & Explanation

Sulfuric acid earned the historical designation of oil of vitriol because early alchemists prepared the dense liquid by distilling green vitriol or iron sulfate. Alternative options such as hydrochloric acid were historically termed spirits of salt rather than oil of vitriol. Sulfuric acid is frequently called the king of chemicals due to its massive consumption in diverse manufacturing sectors.