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Paper chromatography can be used to identify metal ions in wastewater. A drop of sample solution is placed on filter paper. The bottom of the paper is set in a solvent that travels up the paper (see Figure 1). The solvent carries the ions up the paper. Some ions move faster, and therefore farther than others, resulting in a separation as they move up the paper. The paper is dried, then stained, causing the ions to appear as colored spots. R f values are calculated for each spot: Passage 5 2

Table 1 shows R f values for 5 ions. Table 2 shows R f values from 3 samples of wastewater. The same solvent was used for all ions and samples. Table 1 adapted from Thomas McCullough, CSC, and Marissa Curlee, "Qualitative Analysis of Cations Using Paper Chromatography." ©1993 by the American Chemical Society. 3

Table 1 shows R f values for 5 ions. Table 2 shows R f values from 3 samples of wastewater. The same solvent was used for all ions and samples. Table 1 adapted from Thomas McCullough, CSC, and Marissa Curlee, "Qualitative Analysis of Cations Using Paper Chromatography." ©1993 by the American Chemical Society. 4 Copper

Table 1 shows R f values for 5 ions. Table 2 shows R f values from 3 samples of wastewater. The same solvent was used for all ions and samples. Table 1 adapted from Thomas McCullough, CSC, and Marissa Curlee, "Qualitative Analysis of Cations Using Paper Chromatography." ©1993 by the American Chemical Society Copper

26.The information in Tables 1 and 2 supports the conclusion that Sample 3 contains: 1. Cu 2+ and Cd 2+ only. 2. Co 2+ and Hg 2+ only. 3. Ni 2+, Co 2+, and Cd 2+ only. 4. Ni 2+, Cd 2+, and Hg 2+ only Passage 5 Questions 6

26.The information in Tables 1 and 2 supports the conclusion that Sample 3 contains: 1. Cu 2+ and Cd 2+ only. 2. Co 2+ and Hg 2+ only. 3. Ni 2+, Co 2+, and Cd 2+ only. 4. Ni 2+, Cd 2+, and Hg 2+ only Passage 5 Questions 7

26.The information in Tables 1 and 2 supports the conclusion that Sample 3 contains: 1. Cu 2+ and Cd 2+ only. 2. Co 2+ and Hg 2+ only. 3. Ni 2+, Co 2+, and Cd 2+ only. 4. Ni 2+, Cd 2+, and Hg 2+ only Passage 5 Questions 8

26.The information in Tables 1 and 2 supports the conclusion that Sample 3 contains: 1. Cu 2+ and Cd 2+ only. 2. Co 2+ and Hg 2+ only. 3. Ni 2+, Co 2+, and Cd 2+ only. 4. Ni 2+, Cd 2+, and Hg 2+ only Passage 5 Questions 9

28. Based on the information in Table 1, which of the following lists the metal ions in order from the fastest to slowest speed with which they moved up the paper? 1. Hg 2+, Cd 2+, Cu 2+, Co 2+, Ni Cd 2+, Cu 2+, Co 2+, Hg 2+, Ni Ni 2+, Hg 2+, Co 2+, Cu 2+, Cd Ni 2+, Co 2+, Cu 2+, Cd 2+, Hg 2+ Passage 5 Questions 10

28. Based on the information in Table 1, which of the following lists the metal ions in order from the fastest to slowest speed with which they moved up the paper? 1. Hg 2+, Cd 2+, Cu 2+, Co 2+, Ni Cd 2+, Cu 2+, Co 2+, Hg 2+, Ni Ni 2+, Hg 2+, Co 2+, Cu 2+, Cd Ni 2+, Co 2+, Cu 2+, Cd 2+, Hg 2+ Passage 5 Questions 11

29.Based on the information in Table 2, which of the following figures best illustrates the appearance of the filter paper after Sample 1 was analyzed? Passage 5 Questions 12

29.Based on the information in Table 2, which of the following figures best illustrates the appearance of the filter paper after Sample 1 was analyzed? Passage 5 Questions 13

29.Based on the information in Table 2, which of the following figures best illustrates the appearance of the filter paper after Sample 1 was analyzed? Passage 5 Questions 14

29.Based on the information in Table 2, which of the following figures best illustrates the appearance of the filter paper after Sample 1 was analyzed? Passage 5 Questions

29.Based on the information in Table 2, which of the following figures best illustrates the appearance of the filter paper after Sample 1 was analyzed? Passage 5 Questions

30. Based on the information in Table 1, to best identify a metal ion using paper chromatography, one should know the: 1. spot color for the ion only. 2. distance the solvent traveled only. 3. R f value and spot color for the ion only. 4. distance the solvent traveled and spot color of the ion only. Passage 5 Questions 17

30. Based on the information in Table 1, to best identify a metal ion using paper chromatography, one should know the: 1. spot color for the ion only. 2. distance the solvent traveled only. 3. R f value and spot color for the ion only. 4. distance the solvent traveled and spot color of the ion only. Passage 5 Questions 18

30. Based on the information in Table 1, to best identify a metal ion using paper chromatography, one should know the: 1. spot color for the ion only. 2. distance the solvent traveled only. 3. R f value and spot color for the ion only. 4. distance the solvent traveled and spot color of the ion only. Passage 5 Questions 19

30. Based on the information in Table 1, to best identify a metal ion using paper chromatography, one should know the: 1. spot color for the ion only. 2. distance the solvent traveled only. 3. R f value and spot color for the ion only. 4. distance the solvent traveled and spot color of the ion only. Passage 5 Questions 20

30. Based on the information in Table 1, to best identify a metal ion using paper chromatography, one should know the: 1. spot color for the ion only. 2. distance the solvent traveled only. 3. R f value and spot color for the ion only. 4. distance the solvent traveled and spot color of the ion only. Passage 5 Questions 21

30. Based on the information in Table 1, to best identify a metal ion using paper chromatography, one should know the: 1. spot color for the ion only. 2. distance the solvent traveled only. 3. R f value and spot color for the ion only. 4. distance the solvent traveled and spot color of the ion only. Passage 5 Questions 22

30. Based on the information in Table 1, to best identify a metal ion using paper chromatography, one should know the: 1. spot color for the ion only. 2. distance the solvent traveled only. 3. R f value and spot color for the ion only. 4. distance the solvent traveled and spot color of the ion only. Passage 5 Questions 23

30. Based on the information in Table 1, to best identify a metal ion using paper chromatography, one should know the: 1. spot color for the ion only. 2. distance the solvent traveled only. 3. R f value and spot color for the ion only. 4. distance the solvent traveled and spot color of the ion only. Passage 5 Questions 24

30. Based on the information in Table 1, to best identify a metal ion using paper chromatography, one should know the: 1. spot color for the ion only. 2. distance the solvent traveled only. 3. R f value and spot color for the ion only. 4. distance the solvent traveled and spot color of the ion only. Passage 5 Questions 25

30. Based on the information in Table 1, to best identify a metal ion using paper chromatography, one should know the: 1. spot color for the ion only. 2. distance the solvent traveled only. 3. R f value and spot color for the ion only. 4. distance the solvent traveled and spot color of the ion only. Passage 5 Questions 26

30. Based on the information in Table 1, to best identify a metal ion using paper chromatography, one should know the: 1. spot color for the ion only. 2. distance the solvent traveled only. 3. R f value and spot color for the ion only. 4. distance the solvent traveled and spot color of the ion only. Passage 5 Questions 27

30. Based on the information in Table 1, to best identify a metal ion using paper chromatography, one should know the: 1. spot color for the ion only. 2. distance the solvent traveled only. 3. R f value and spot color for the ion only. 4. distance the solvent traveled and spot color of the ion only. Passage 5 Questions 28

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