Which Acid is know as ‘Oil of Vitriol’?

Which chemical was historically known as %u2018White vitriol andgoslarite%u2019?

Before the use of systematic names, many compounds had commonnames. Give the systematic name for each of the following.

(a) blue vitriol, CuSO₄

determine the Ka of the weak acid HX knowing that a 0.10 M solution of LiX has pH of 8.90