Question

'The blue-green colour of the solution is due to the formation of copper(II) chloride in the reaction' is an example of which kind of chemical reaction?

• A. Reaction of metallic oxides with acids
• B. Reaction of non-metallic oxides with acids
• C. Reaction of metallic oxides with bases
• D. Reaction of non-metallic oxides with base

Answer 1

The correct option is A 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.

$2CuO+2HCl\to 2CuC{l}_2+H_{2}O$