Question: emphasis on the net ionic equations The pH is adjusted to 0.5 and thioacetamide is added to an unknown containing Group II cations. A black

emphasis on the net ionic equations

The pH is adjusted to 0.5 and thioacetamide is added to an unknown containing Group II cations. A black precipitate is formed, insoluble in NaOH but completely soluble in HNO3. When NH3 is added, a white precipitate forms and the solution turns deep blue. What ion(s) is/are clearly absent? What ion(s) is/are almost certainly present? Write net ionic equations for all observations

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