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Difficulty: MediumCopper: Extraction, Physical and Chemical Properties, and Compounds

Match each copper-containing ore with its corresponding chemical formula.

  • MalachiteCuCO3⋅Cu(OH)2\text{CuCO}_3\cdot\text{Cu(OH)}_2
  • Copper pyritesCuFeS2\text{CuFeS}_2
  • CupriteCu2O\text{Cu}_2\text{O}
  • ChalcociteCu2S\text{Cu}_2\text{S}

Answer

Malachite matches CuCO3⋅Cu(OH)2\text{CuCO}_3\cdot\text{Cu(OH)}_2, Copper pyrites matches CuFeS2\text{CuFeS}_2, Cuprite matches Cu2O\text{Cu}_2\text{O}, and Chalcocite matches Cu2S\text{Cu}_2\text{S}.
Each copper ore correctly maps to its characteristic chemical formula: Malachite is basic copper carbonate CuCO3⋅Cu(OH)2\text{CuCO}_3\cdot\text{Cu(OH)}_2; Copper pyrites is copper iron disulfide CuFeS2\text{CuFeS}_2; Cuprite is copper(I) oxide Cu2O\text{Cu}_2\text{O}; and Chalcocite is copper(I) sulfide Cu2S\text{Cu}_2\text{S}.

Step-by-Step Solution

1
Identify the chemical nature of Malachite
Malachite is a basic carbonate mineral of copper with the formula CuCO3⋅Cu(OH)2\text{CuCO}_3\cdot\text{Cu(OH)}_2.
Basic copper carbonate consists of copper carbonate and copper hydroxide in a 1:1 mole ratio.
2
Identify the chemical nature of Copper pyrites
Copper pyrites (chalcopyrite) has the formula CuFeS2\text{CuFeS}_2.
It is the chief ore of copper containing both iron and copper sulfides.
3
Identify the chemical nature of Cuprite
Cuprite is copper(I) oxide, Cu2O\text{Cu}_2\text{O}.
Cuprite is a red oxide ore containing copper in the +1 oxidation state.
4
Identify the chemical nature of Chalcocite
Chalcocite is copper(I) sulfide, Cu2S\text{Cu}_2\text{S}.
Chalcocite is a dark sulfide ore of copper.

Key Concept

Chemical composition and formulas of primary copper ores
Estimated Time:1m 0s
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Topics

Copper: Extraction, Physical and Chemical Properties, and Compounds

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