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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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