The Rf value for the Ibuprofen was ~0.56, ~0.47 for acetaminophen, ~0.16 for caffeine, and ~2.7 for aspirin. The hardiness of the method is evidenced by the Rf values, which vary by no more than 3% over a four-month period.
What is the Rf value of caffeine?
While the Rf value from the analysis of pure caffeine is 0.70; 0.71; 0.72.
What is the Rf value of paracetamol?
Results for TLC analysis
| STANDARD SAMPLES | Paracetamol | Caffeine |
|---|---|---|
| Rf values from TLC analysis | 0.64 | 0.89 |
What is the Rf value?
(in chromatography) The distance travelled by a given component divided by the distance travelled by the solvent front. For a given system at a known temperature, it is a characteristic of the component and can be used to identify components. From: RF value in A Dictionary of Chemistry »
Is caffeine more polar than aspirin?
Acetaminophen contains one amide and one phenolic group. Aspirin contains one carboxylic and one ester group. As Caffeine contains most number of heteroatoms in the functional group and it has lowest Rf value. So it is most polar.
What is the Rf value for chlorophyll a?
0.24-0.30
| Pigment | Rf value range | Colour |
|---|---|---|
| Pheophytin b | 0.33-0.40 | Brown |
| Chlorophyll a | 0.24-0.30 | Blue green |
| Chlorophyll b | 0.20-0.26 | Green |
| Xanthophylls | 0.04-0.28 | Yellow |
Is aspirin more polar than caffeine?
Which is more polar aspirin or paracetamol?
Is paracetamol more polar than aspirin? Acetaminophen is more polar than aspirin because it has more sites for hydrogen | Course Hero.
How paracetamol is identify?
A simple rapid and accurate High performance thin layer chromatography (HPTLC) method has been developed for identification of paracetamol from biological material, i.e. blood, gastric larvage, and visceral material.
What is the Rf value for aspirin and gentisic acid?
The Rf values are 0.70 for salicylic acid and diflunisal, 0.67 for aspirin and methyl salicylate, 0.60 for gentisic acid, 0.57 for p-aminosalicyclic acid, and 0.40 for salicyluric acid.
What is the Rf value for aspirin and diflunisal?
The Rf values are 0.70 for salicylic acid and diflunisal, 0.67 for aspirin and methyl salicylate, 0.60 for gentisic acid, 0.57 for p-aminosalicyclic acid, and 0.40 for salicyluric acid. Click to see full answer. Also to know is, what is the RF value of ibuprofen?
What is the Rf value of aspirin and caffeine?
The Rf value of caffeine was 0.16, while the unknown 1 was 0.15 clearly demonstrating the closeness in numerical values. Unknown 2 was determined to have aspirin, acetaminophen and caffeine present due to the closeness of Rf value of the known components compared to the Rf values of. This preview has intentionally blurred sections.
What are the Rf values of Excedrin and aspirin?
The chromatograms of pure aspirin, caffeine, acetaminophen, ibuprofen, Excedrin, and Anacin were as displayed in Figure 1, and their Rf values as recorded in Table 1. Excedrin’s lowest and middle Rf values clearly correspond to those of caffeine and acetaminophen, respectively.
