What method uses bacteria to help extract copper from low-grade copper ores?PhytominingReduction by carbonBioleachingElectrolysis2What type of plants does phytomining depend on? Plants that can absorb copper ions from soilPlants that can detoxify copper ionsPlants that can release copper ions into soilPlants that can make copper ions during photosynthesis3What two methods can be used to extract copper from a solution of copper sulfate produced by bioleaching or phytomining?Neutralisation or reduction by carbonNeutralisation or displacementElectrolysis or displacementElectrolysis or thermal decomposition4In the electrolysis of copper, which half equation shows what happens at the negative copper electrode? 2Cu2+(aq) + 2e– → 2Cu(s)2Cu(s) → 2Cu+(aq) + 2e–Cu(s) → Cu2+(aq) + 2e– Cu2+(aq) + 2e– → Cu(s)5What is the balanced symbol equation for the displacement reaction between copper sulfate and iron?Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s)Fe(s) + CuSO4(aq) → FeS(aq) + CuO4(s)FeSO4(aq) + Cu(s) → Fe(s) + CuSO4(aq)Fe(s) + CuSO4(aq) → FeO4(aq) + CuS(s)6Which of the following is not an advantage of bioleaching and phytomining over the traditional methods of extracting copper from high-grade ores?Removes toxic copper from soilMore energy efficientDoes not require miningVery fast methods
Question
What method uses bacteria to help extract copper from low-grade copper ores?PhytominingReduction by carbonBioleachingElectrolysis2What type of plants does phytomining depend on? Plants that can absorb copper ions from soilPlants that can detoxify copper ionsPlants that can release copper ions into soilPlants that can make copper ions during photosynthesis3What two methods can be used to extract copper from a solution of copper sulfate produced by bioleaching or phytomining?Neutralisation or reduction by carbonNeutralisation or displacementElectrolysis or displacementElectrolysis or thermal decomposition4In the electrolysis of copper, which half equation shows what happens at the negative copper electrode? 2Cu2+(aq) + 2e– → 2Cu(s)2Cu(s) → 2Cu+(aq) + 2e–Cu(s) → Cu2+(aq) + 2e– Cu2+(aq) + 2e– → Cu(s)5What is the balanced symbol equation for the displacement reaction between copper sulfate and iron?Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s)Fe(s) + CuSO4(aq) → FeS(aq) + CuO4(s)FeSO4(aq) + Cu(s) → Fe(s) + CuSO4(aq)Fe(s) + CuSO4(aq) → FeO4(aq) + CuS(s)6Which of the following is not an advantage of bioleaching and phytomining over the traditional methods of extracting copper from high-grade ores?Removes toxic copper from soilMore energy efficientDoes not require miningVery fast methods
Solution
The method that uses bacteria to help extract copper from low-grade copper ores is Bioleaching.
Phytomining depends on plants that can absorb copper ions from soil.
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.
In the electrolysis of copper, the half equation that shows what happens at the negative copper electrode is 2Cu2+(aq) + 2e– → 2Cu(s).
The balanced symbol equation for the displacement reaction between copper sulfate and iron is Fe(s) + CuSO4(aq) → FeSO4(aq
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