Meanwhile, the compound that has less polarity or non-polar will stay with stationary phase. In this experiment, the Rf value is determined by the difference of polarity between stationary phase and mobile phase. Rf (Retention factor) is a ratio between the travel distance of the sample to the travel distance of the solvent. It consider the identity of the compound and can help in the determination of unknown sample by comparing the known Rf value with the Rf value of unknown sample. Depend on the result, the more polar compound like caffeine has small Rf value (average 0.12) because it didn’t travel with the solvent. The Acetaminophen are less polar than the caffeine but more polar than the Aspirin and Ibuprofen and has average Rf value (0.4). The Aspirin has more Rf value (average 0.55) than the Caffeine and the Acetaminophen because it is less polar and travel with the solvent. The ibuprofen has the bigger Rf value in this experiment (average 0.7) because it has the lower polarity than the other samples in the experiment, so it travels away with the
Meanwhile, the compound that has less polarity or non-polar will stay with stationary phase. In this experiment, the Rf value is determined by the difference of polarity between stationary phase and mobile phase. Rf (Retention factor) is a ratio between the travel distance of the sample to the travel distance of the solvent. It consider the identity of the compound and can help in the determination of unknown sample by comparing the known Rf value with the Rf value of unknown sample. Depend on the result, the more polar compound like caffeine has small Rf value (average 0.12) because it didn’t travel with the solvent. The Acetaminophen are less polar than the caffeine but more polar than the Aspirin and Ibuprofen and has average Rf value (0.4). The Aspirin has more Rf value (average 0.55) than the Caffeine and the Acetaminophen because it is less polar and travel with the solvent. The ibuprofen has the bigger Rf value in this experiment (average 0.7) because it has the lower polarity than the other samples in the experiment, so it travels away with the