Which of the Following Is an Example of a Hydrometallurgical

question 14

Multiple Choice

Which of the following is an example of a hydrometallurgical process?

• A) Al(O
• H)₃(s) + SiO₂(s) AlSiO₃(s) + 3H₂O(g)
• B) Ni(O
• H)₂(s) NiO(s) + H₂O(g)
• C) 2Al(O
• H)₃(s) Al₂O₃(s) + 3H₂O(g)
• D) CuSO₄^∙5H₂O(s) + H₂O(l) CuS(s) + H₂SO₄(aq) + 5OH⁻(aq)
• E) Al₂O₃^∙nH₂O(s) + 2OH⁻(aq) + 2H₂O(l) 2Al(O
• H)₄⁻(aq)

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