Question

OT bulu lys.
3. The chemical formula for blue vitriol is​

Answer 1

Vitriol, any of certain hydrated sulfates or sulfuric acid. Most of the vitriols have important and varied industrial uses. Blue, or roman, vitriol is cupric sulfate; green vitriol—also called copperas, a name formerly applied to all the vitriols—is ferrous sulfate

CuSO4