Question

(1) Blue coloured solution is given in the figure. Which solution is it? What causes the
colour change in this solution. Explain.​

Answer 1

Answer:

Reaction of metallic oxides with acids

Metal oxides always reacts with acid to form salt and water. Copper oxide when reacts with HCl it forms blue-green copper(II) chloride.

2CuO+2HCl→2CuCl 2+h2 o

Thank you =)