What method uses bacteria to help extract copper from low-grade copper ores?Reduction by carbonPhytominingElectrolysisBioleaching2What type of plants does phytomining depend on? Plants that can absorb copper ions from soilPlants that can make copper ions during photosynthesisPlants that can detoxify copper ionsPlants that can release copper ions into soil3What two methods can be used to extract copper from a solution of copper sulfate produced by bioleaching or phytomining?Electrolysis or displacementNeutralisation or displacementNeutralisation or reduction by carbonElectrolysis or thermal decomposition4In the electrolysis of copper, which half equation shows what happens at the negative copper electrode? Cu2+(aq) + 2e– → Cu(s)Cu(s) → Cu2+(aq) + 2e– 2Cu2+(aq) + 2e– → 2Cu(s)2Cu(s) → 2Cu+(aq) + 2e–5What is the balanced symbol equation for the displacement reaction between copper sulfate and iron?Fe(s) + CuSO4(aq) → FeO4(aq) + CuS(s)Fe(s) + CuSO4(aq) → FeS(aq) + CuO4(s)Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s)FeSO4(aq) + Cu(s) → Fe(s) + CuSO4(aq)6Which of the following is not an advantage of bioleaching and phytomining over the traditional methods of extracting copper from high-grade ores?Does not require miningVery fast methodsMore energy efficientRemoves toxic copper from soil
Question
What method uses bacteria to help extract copper from low-grade copper ores?Reduction by carbonPhytominingElectrolysisBioleaching2What type of plants does phytomining depend on? Plants that can absorb copper ions from soilPlants that can make copper ions during photosynthesisPlants that can detoxify copper ionsPlants that can release copper ions into soil3What two methods can be used to extract copper from a solution of copper sulfate produced by bioleaching or phytomining?Electrolysis or displacementNeutralisation or displacementNeutralisation or reduction by carbonElectrolysis or thermal decomposition4In the electrolysis of copper, which half equation shows what happens at the negative copper electrode? Cu2+(aq) + 2e– → Cu(s)Cu(s) → Cu2+(aq) + 2e– 2Cu2+(aq) + 2e– → 2Cu(s)2Cu(s) → 2Cu+(aq) + 2e–5What is the balanced symbol equation for the displacement reaction between copper sulfate and iron?Fe(s) + CuSO4(aq) → FeO4(aq) + CuS(s)Fe(s) + CuSO4(aq) → FeS(aq) + CuO4(s)Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s)FeSO4(aq) + Cu(s) → Fe(s) + CuSO4(aq)6Which of the following is not an advantage of bioleaching and phytomining over the traditional methods of extracting copper from high-grade ores?Does not require miningVery fast methodsMore energy efficientRemoves toxic copper from soil
Solution
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The method that uses bacteria to help extract copper from low-grade copper ores is Bioleaching.
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Phytomining depends on plants that can absorb copper ions from soil.
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The two methods that can be used to extract copper from a solution of copper sulfate produced by bioleaching or phytomining are Electrolysis or displacement.
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In the electrolysis of copper, the half equation that shows what happens at the negative copper electrode is Cu2+(aq) + 2e– → Cu(s).
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The balanced symbol equation for the displacement reaction between copper sulfate and iron is Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s).
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The statement that is not an advantage of bioleaching and phytomining over the traditional methods of extracting copper from high-grade ores is "Very fast methods".
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