What are the R f values of the spots on this TLC plate? Solvent front |7.9 7.2 8.4 1.6 1.4 Baseline O 0.17 and 0.19. O 0.17 and 0.36. 0.18 and 0.38. O 0.19 and 0.22. O 0.19 and 0.42.
What are the R f values of the spots on this TLC plate? Solvent front |7.9 7.2 8.4 1.6 1.4 Baseline O 0.17 and 0.19. O 0.17 and 0.36. 0.18 and 0.38. O 0.19 and 0.22. O 0.19 and 0.42.
Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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![**Question:**
What are the \( R_f \) values of the spots on this TLC plate?
**Diagram Description:**
- The diagram shows a TLC (Thin Layer Chromatography) plate with a solvent front and baseline marked.
- Two spots are visible on the plate. The distances from the baseline to the solvent front and from the baseline to each spot are provided.
- The solvent front is at 8.4 cm from the baseline.
- The distance of the first spot from the baseline is 1.6 cm and the distance of the second spot is 1.4 cm.
**Calculation of \( R_f \) Values:**
- The \( R_f \) value is calculated as the ratio of the distance traveled by the substance to the distance traveled by the solvent front.
\[ R_{f1} = \frac{1.6}{8.4} \approx 0.19 \]
\[ R_{f2} = \frac{1.4}{7.2} \approx 0.19 \]
- The corresponding choices are:
- ○ 0.17 and 0.19.
- ○ 0.17 and 0.36.
- ○ 0.18 and 0.38.
- ○ 0.19 and 0.22.
- ○ 0.19 and 0.42.
**Correct Choice:**
- The correct \( R_f \) values are 0.19 for both spots, which were not listed as an exact option but the closest values are:
○ 0.19 and 0.42 (for one of the calculations, \( 0.38 \) was found after re-evaluating distances \( 1.6/8.4 \))](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2e06c0ab-6613-491a-b02c-83373b434464%2Fdadcebed-f2ff-4261-a8ae-7a8edff9ffa4%2Fdcip7kp_processed.png&w=3840&q=75)
Transcribed Image Text:**Question:**
What are the \( R_f \) values of the spots on this TLC plate?
**Diagram Description:**
- The diagram shows a TLC (Thin Layer Chromatography) plate with a solvent front and baseline marked.
- Two spots are visible on the plate. The distances from the baseline to the solvent front and from the baseline to each spot are provided.
- The solvent front is at 8.4 cm from the baseline.
- The distance of the first spot from the baseline is 1.6 cm and the distance of the second spot is 1.4 cm.
**Calculation of \( R_f \) Values:**
- The \( R_f \) value is calculated as the ratio of the distance traveled by the substance to the distance traveled by the solvent front.
\[ R_{f1} = \frac{1.6}{8.4} \approx 0.19 \]
\[ R_{f2} = \frac{1.4}{7.2} \approx 0.19 \]
- The corresponding choices are:
- ○ 0.17 and 0.19.
- ○ 0.17 and 0.36.
- ○ 0.18 and 0.38.
- ○ 0.19 and 0.22.
- ○ 0.19 and 0.42.
**Correct Choice:**
- The correct \( R_f \) values are 0.19 for both spots, which were not listed as an exact option but the closest values are:
○ 0.19 and 0.42 (for one of the calculations, \( 0.38 \) was found after re-evaluating distances \( 1.6/8.4 \))
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