Question

Which of the following is the reason for the bluish green colour solution when copper
oxide reacts with dilute hydrochloric acid? [ ]
A. Copper (1) chloride
B. Copper (11) chloride
C. Copper (III) chloride
D. Copper (IV) chloride​

Answer 1

Answer:

Copper oxide is one of the most common oxide of copper metal with chemical formula CuO. The reaction of copper oxide with dilute HCl forms . Here forms a blue-green solution. Hence when copper oxide and dilute hydrochloric acid is mixed it forms blue-green solution.

Answer 2

Answer:

B. Copper (II) chloride

Explanation:

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