Copper(II) Chloride is an inorganic compound and naturally occurs as an anhydrous mineral called tolbachite and dehydrated eriochalcite. Both the minerals are obtained from fumaroles areas. Copper(II) Chloride is also known as Copper dichloride or Cupric chloride or Cupric dichloride. In anhydrous form, it appears as a yellowish-brown powder. In dihydrate, it appears as a green crystalline solid.
Copper(II) Chloride’s Formula is CuCl2. Copper(II) Chloride consists of one copper atom and two chlorine atoms. Copper is malleable, ductile metal which is present in group-11 of the periodic table. Its atomic number is 29 and is represented by the symbol Cu. Copper is a very good conductor of heat and electricity. It is used along with different metals like gold, and silver in jewelry. Chlorine is toxic, a corrosive gas present in group-17 of the periodic table. It is the second lightest gas in the halogen family. Its atomic number is 17 and is represented by the symbol Cl. At room temperature, it appears in greenish-yellow color.
Structure of Copper(II) Chloride
Physical Properties of Copper(II) Chloride
Chemical Properties of Copper(II) Chloride
Uses of Copper(II) Chloride
Question 1: How Copper(II) Chloride is prepared?
Answer:
Commercially Copper(II) Chloride is obtained by chlorination of copper. The chemical reaction of copper chlorination is given by,
Cu + Cl2 + 2H2O ⇢ CuCl2(H2O)2
Question 2: What is the charge of Copper chloride?
Answer:
The charge of chlorine in copper chloride is -1 and in order to stable the compound copper in copper chloride must have +1 charge. So the charge of copper in copper chloride is +1. Therefore it is called as Copper(I) Chloride.
Question 3: Find the molecular weight of Copper(II) Chloride?
Solution:
Atomic weight of 1 Copper atom = 63.546
Atomic weight of 1 Chlorine atom = 35.453
Molecular weight of CuCl2 = 63.546 + (2 × 35.453)
=134.45
Molecular weight of Copper(II) Chloride is 134.45 g/mol.
Question 4: Is Cupric dichloride hazardous?
Answer:
Cupric Dichloride is health hazardous. Inhaling CuCl2 causes coughing. Swallowing causes vomiting and pain. When a liquid containing CuCl2 comes in contact with eye or skin causes irritation.
Question 5: Why Cupric dichloride is violet in color?
Answer:
When the electrons pass from the t2 energy level to the e energy level, photons having the wavelength of yellow light are absorbed and the hydrated copper chloride becomes violet in color.
Question 6: Copper(II) Chloride is used in the preparation of crackers?
Answer:
Yes, Copper(II) Chloride is used in preparation of crackers/fireworks. Fireworks containing CuCl2 creates blue and green hue in the sky and make the sky look colorful.
Question 7: Copper(II) Chloride is solid?
Answer:
Yes, Copper(II) Chloride is solid. In anhydrous form CuCl2 appears in yellowish-brown color. Gradually it absorbs moisture to form a green-blue dihydrate.
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Last Updated :
01 May, 2022
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