Which of these spots shows how a good solvent behaves? The answer is in the para

Question

Which of these spots shows how a good solvent behaves? The answer is in the paragraph below, but I don't understand why and if it's option a or option b. Thanks will thumbs up please help. and Isolating Lycopene from Tomato Paste raphy: Analyzing Analgesics ics and Isolating Lycopene from Tomato Paste Solvent front Chromatographic plate a Step 3. Picking a Solvert the most crucial parts of a successful TLC separation is choosing the appro- One of riate mobile phase; see the section "Mobile Phase Polarity" above. Make some spots 'tof the mixture to be separated on a test TLC plate, either a new or a used one. Touch rring to Fig. 8, note that gin in Fig. 8a, and in Fig.86 each spot with a different solvent held in a capillary. Referring to Fig. 8, note that two concentric rings are seen between the origin and the solvent good solvent behaves. In Fig 12c, the mixture traveled with to This Step 4. Developing the Plate Once the dilute solution of the mixture has been spot is the actual chnpomatographic separation, allet la the mixture did not travel away from the point of ori th the solvent front on the n

Explanation / Answer

In figure a, the solvent with high viscous nature cannot travel more on tlc plate, hence it is not carrying sample to separate.

In figure b, the solvent with proper viscosity is used and hence it makes two concentric rings of two samples by separation.

In figure c, the solvent and samples travel with same speed. Also samples are soluble in mobile phase and due to low viscosity it travels more readily than the solvents used in figure a, and b.

Thus solvent used in figure b is good solvent with proper viscous force

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.