Copper(II) Chloride(CuCl2): Formula, Structure, Properties and Uses

Copper (II) chloride, also referred to as Cupric chloride, or Copper dichloride, or Cupric dichloride, is a chemical compound with the formula CuCl₂. Copper dichloride takes place naturally as an anhydrous mineral called tolbachite and dehydrated eriochalcite. Both are mostly obtained from fumaroles. When it comes to copper dichloride, it starts off light brown and gradually absorbs moisture to become a bluish-green dihydrate. Here, we will discuss more about the chemical compound along with some important questions.

Key takeaways: inorganic salts, chemical synthesis, molecular mass, methanol, ethanol, acetone, oxidising substance

---

What is Copper Chloride?

[Click Here for Sample Questions]

Cupric chloride is another name for copper (II) chloride. It is also an inorganic salt. In chemical synthesis, this salt is also used as a catalyst. For the blue/green colour of this salt, we also employ Copper (II) chloride in the manufacture of pyrotechnics. The formula for Copper II chloride will assist us in learning more about this inorganic salt.

---

Formula and Structure of Copper Chloride

[Click Here for Sample Questions]

CuCl₂ is the chemical formula for Copper II chloride. Similarly, this salt has a molar mass of 134.45 g mol^-1. This salt has a molecular mass of 170.48 g mol^-1 in its dehydrated state. Furthermore, this anhydrous salt has one cation Cu²⁺ and two anion Cl^– in its structure.

Copper (II) chloride has a deformed octahedron structure with 6 chloride anions coupled to a copper cation. In this dehydrated state, it takes the shape of a Cu²⁺-centred atom surrounded by two water molecules and two chlorine anions Cl^–.

---

Occurrence of Copper Chloride

[Click Here for Sample Questions]

When it comes to Copper (II) chloride, these salts can be found in anhydrous or dehydrated form in the uncommon minerals tolbachite and eriochalcite. It's also found in abundance in fumaroles.

---

Preparation of Copper Chloride

[Click Here for Sample Questions]

To make copper chloride, combine metallic copper with chlorine in the following way:

CuCl₂ = Cu + Cl₂ + 2 H₂O

Copper (II) chloride can also be made by mixing copper (II) hydroxide or copper (II) carbonate with hydrochloric acid:

CuCl₂ + 2 H₂O = Cu (OH) ₂ + 2HCl

---

Physical Properties of Copper Chloride

[Click Here for Sample Questions]

• Copper (II) chloride is blue-green in colour and fairly solid in its dehydrated state. 
• In anhydrous form it is similarly yellow-brown in colour and solid. 
• Copper (II) chloride has a density of 3.38 g mL^-1 in anhydrous form and 2.51 g mL^-1 in dehydrate form.
• The anhydrous salt has a melting point of 498 degrees Celsius. 
• Similarly, the anhydrous salt decomposes at 993 ^oC. Water, methanol, ethanol, and acetone are all stated to be soluble in copper (II) chloride.

---

Chemical Properties of Copper Chloride

[Click Here for Sample Questions]

• Copper chloride is a very adaptable salt that can survive a wide range of reactions. As a result, it is suitable for use in the chemical industry or chemical synthesis. 
• When a reductant is present, copper (II) chloride can undergo a redox reaction. Metallic copper or cuprous salt make up the produced compounds: 2 CuCl + 2 HCl + H₂SO₄ = 2 CuCl + 2 SO₂ + 2 H₂O
• Copper (II) chloride can be replaced by copper (II) hydroxide in the presence of bases: Cu (OH)₂ + 2 NaCl = CuCl₂ + 2 NaOH

---

Uses of Copper Chloride

[Click Here for Sample Questions]

• Palladium (II) chloride may be made using copper (II) chloride as a catalyst in combination with other chloride salts. 
• One of the most popular applications is the conversion of ethylene to acetaldehyde. CH₃CHO + Pd + 2 HCl = C₂H₄ + PdCl₂ + H₂O
• Copper (II) chloride is the most commonly used pyrotechnic chemical because of its blue/green colour.

---

Precautions of Copper Chloride

[Click Here for Sample Questions]

• Copper (II) chloride is extremely poisonous at high quantities. 
• It can also react with oxidising substances in the same way. This substance is non-flammable.

---

Things To Remember

• Cupric chloride is another name for copper (II) chloride. It is also an inorganic salt. In chemical synthesis, this salt is also used as a catalyst.
• CuCl₂ is the chemical formula for Copper II chloride. Similarly, this salt has a molar mass of 134.45 g mol^-1. This salt has a molecular mass of 170.48 g mol^-1 in its dehydrated state. 
• When it comes to Copper (II) chloride, these salts can be found in anhydrous or dehydrated form in the uncommon minerals tolbachite and eriochalcite. 
• Copper (II) chloride is blue-green in colour and fairly solid in its dehydrated state. In anhydrous form it is similarly yellow-brown in colour and solid.
• Copper chloride is a very adaptable salt that can survive a wide range of reactions. As a result, it is suitable for use in the chemical industry or chemical synthesis.
• Palladium (II) chloride may be made using copper (II) chloride as a catalyst in combination with other chloride salts.