Based on your reading about qualitative analysis and your knowledge of the solubility rules, consider the following scenario. An unknown mixture of ions may contain the following ions: Cr, r. CO, so,. Po,. NO,. The following tests are performed on the unknown solution and these are the results: i) AgNO, is added to the mixture and no precipitate forms. ii) BaCh is added to the mixture and no precipitate forms. Based on the results (i) and (ii), answer the following: a) Which ions (if any) are definitely identified? b) Which ions (if any) are definitely not in the unknown mixture? c) Which ions (if any) would require further tests in order to determine their presence in the unknown mixture?
