A Solution May Contain the Following Ions Ag⁺,Cu²⁺,Cd²⁺,Mn²⁺,Ni²⁺ and Na⁺

question 169

Multiple Choice

A solution may contain the following ions Ag⁺,Cu²⁺,Cd²⁺,Mn²⁺,Ni²⁺ and Na⁺.A white precipitate formed when 0.10 M NaCl was added and after this was removed the solution was treated with H₂S gas under acidic conditions and no precipitate formed.When the solution was made basic and again treated with H₂S gas a dark colored precipitate formed.If no further tests were made then what conclusions can you draw?

• A)possible ions present Ag⁺,Mn²⁺,Ni²⁺
• B)possible ions present Ag⁺,Mn²⁺,Ni²⁺,Na⁺
• C)possible ions present Ag⁺,Cu²⁺,Cd²⁺
• D)possible ions present Ag⁺,Cu²⁺,Cd²⁺,Na⁺

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