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

Multiple Choice

In the qualitative analysis scheme for metal ions,how are the Analytical Group I cations separated from the other cations?

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