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

Copper $\,(II)\,$ chloride is that substance with the formula $CuC{l_2}$. This is often a light- brown solid, which slowly absorbs moisture to create a blue-green oxide. A solution prepared from copper $\,(II)\,$ chloride contains a variety of copper $\,(II)\,$ complexes depending on concentration, temperature, and also the presence of additional chloride ions. Copper Salt and water are produced when acids react with copper oxides.

Complete step by step answer:
Metal oxides consist of atoms of a metal combined with atoms of oxygen. Metal oxides usually react with acids to supply salt and water. Metal oxides are bases because they neutralize acids.
This will be shown in an equation:
$Acid + MetalOxide = Salt + Water$
The salt produced from these reactions depends on the acid that's used. Metal oxides form chloride salts when reacting with acid, nitrate salts when reacting with acid, and sulphate salts when reacting with vitriol.
Copper $\,(II)\,$ chloride is created from the reaction of oxide with dilute acid.
The chemical process is expressed as below:
$\,HCl + CuO \to CuC{l_2} + {H_2}O\,$
After the reaction takes place the colour of the answer becomes blue-green thanks to the formation of copper $\,(II)\,$ chloride and therefore the oxide dissolves. This proves that metallic oxides are basic oxides.
So the correct answer is option A.

Note: There are three types of metallic oxides that exist.
-An oxide that mixes with water to provide an acid is termed as an acidic oxide.
-The oxide that offers a base in water is thought of as a basic oxide.
-An amphoteric solution may be a substance that may chemically react as either acid or base.
-However, it's also possible for oxide to be neither acidic nor basic, but maybe a neutral oxide. The oxides of elements in a very period become progressively more acidic as one goes from left to right during a period of the periodic table