Discussion 5 points Explain why different compounds travel a

Discussion- 5 points Explain why different compounds travel at different rates along the TLC plate? Relate your answer to the single components in your analgesic pills Provide a rationale for your identification of each of the single components of your mixture found in the analgesic pills Laboratory Techniques and Results 3 points-Points will be deducted from not wearing the appropriate eye protection, improper disposal of reagents, breaking of glassware and unsafe behavior in the lab

Solution

Answer

Chromatography is a separation technique in which different compounds in a mixture are carried by the mobile phase at different rates moving along a stationary phase. In thin layer chromatography, the stationary phase is a thin piece of aluminium coated with silica gel powder. The mobile phase is usually a solvent, which is moving along a plate due to the capillary action. compounds move at different rates because the time spent to absorb on the plate and also depends on the solubility of the compound in the solvent. The more time spend on the plate will move slower. The more time they spend in the solvent will move faster along with the solvent.

In the Result plate 1, salicylamide moved faster than the other compound present. So, the solubility of salicylamide in the solvent is high. Thats why it travelled along with the solvent.