Experiment 8: Separation of a Mixture by Paper Chromatography REPORT SHEET Ni+ Color of spots: Cut Fe3+ 2. Ion requiring no development : Ni2+ 3. Ammonia develops a color. 4. The ion that causes the color of (3) is s. Dimethylglyoxime develops a color. 6. The ion that causes the color of (5) is 7. Distances for knowns are: solvent: mm; Cu2+ mm; Ni2+ mm; Fe3+ mm. R, values for knowns: Cu2+ ; Fe3+ 9 Unknown label 10. Distances for unknowns: mm; mm; 11.R, values for unknowns: mm; 12. Ions present in unknown Q1: Which ion has the most affinity for the mobile phase and which ion has the most affinity for the stationary phase? (Explain how you got the answer). mm. mm. Q2: Why do we use a developing agent on some ions? And give an example. Group.4 10 9 8 7 9 5 1 cm Cu? Ni? Fe Mix Unknown.4)