Question

4. The common name of copper sulphate​

Answer 1

The pentahydrate (x = 5) is the most common form. Older names for this compound include blue vitriol, bluestone, vitriol of copper, and Roman vitriol.

Answer 2

Answer:

blue vitriol

Explanation:

Copper sulphate is the chemical compound with the chemical formula CuSO4

. This salt exists as a series of compounds that differ in their degree of hydration. The anhydrous form is a pale green or gray-white powder, whereas the pentahydrate (CuSO4 .5 H20) the most commonly encountered salt, is bright blue. Other names for copper(II) sulfate are 'blue vitriol' and bluestone