The Cu²⁺ Ion Can Be Separated from Ag⁺,Ca²⁺,and K⁺ in Aqueous

question 65

Multiple Choice

The Cu²⁺ ion can be separated from Ag⁺,Ca²⁺,and K⁺ in aqueous solution by

• A)precipitation of Cu²⁺ as CuS(s)at pH-1.
• B)precipitation of Cu²⁺ as Cu(OH)₂(s)with 6 M NaOH(aq).
• C)precipitation of Cu²⁺ as CuCl₂(s)with 6 M HCl(aq).
• D)precipitation of Ag⁺,Ca²⁺,and K⁺ as the carbonates.
• E)None of these procedures will separate Cu²⁺ from the other ions.

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