In the Qualitative Analysis Scheme for Metal Ions,how Are the Analytical

question 31

Multiple Choice

In the qualitative analysis scheme for metal ions,how are the Analytical Group III cations separated from the cations of Analytical Groups IV and V?

• A)by addition of H₂S in acidic solution,forming insoluble metal sulfides
• B)by addition of (NH₄)₂CO₃ or (NH₄)₃PO₄,forming insoluble metal carbonates or phosphates
• C)by addition of H₂SO₄,forming insoluble metal sulfates
• D)by addition of HCl,forming insoluble metal chlorides
• E)by addition of H₂S in basic solution,forming insoluble metal sulfides or hydroxides

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