Ali Youssef
CHM 111-0A7L
Mitra Jahangeri
Paper Chromatography Lab Discussion The results of the Paper Chromatography process seem to have aligned with what was expected. When the capillary action on the paper had completed and the chromatograph was finished, the distance that each cation moved (D), as well as the distance that the solvent moved (L), could be properly measured. The distance that the solvent moved ended up being 7.05cm, a number that would represent the constant variable L in the equation for calculating the Rf values of all the cations. The distance that each cation moved obviously varied: Ag+ moved 0cm, Co2+ moved 3.4cm, Cu2+ moved 4.0cm, and Fe3+ moved 5.3 cm. With the value of the solvent’s moved distance and the value of each cation’s moved distance (D), the Rf values of each cation could then be calculated using Rf = . Each Rf value represents the ratio between the distance moved by the cation and the distance moved by the solvent. By performing a calculation for each cation’s Rf value, the Rf values found for Ag+, Co2+, Cu2+, and Fe3+ were 0.000, .48, .57, and .75 respectively.
In …show more content…
They also fairly reflect the Rf values found in the known mixture, which was intended to be used as a reference point. The Paper Chromatography experiment was successful in displaying a method in which cations could be identified. This was proven in the experiment by the examination of the unknown mixture, which was properly identified by comparing the physical properties of the unknown cations (and the Rf values) to the previous data of the known cations. The Paper Chromatography process was better understood as a result of this experiment. Overall, the data and significant figures in the calculations are fairly accurate, and could’ve potentially been more accurate with less human
CHM 111-0A7L
Mitra Jahangeri
Paper Chromatography Lab Discussion The results of the Paper Chromatography process seem to have aligned with what was expected. When the capillary action on the paper had completed and the chromatograph was finished, the distance that each cation moved (D), as well as the distance that the solvent moved (L), could be properly measured. The distance that the solvent moved ended up being 7.05cm, a number that would represent the constant variable L in the equation for calculating the Rf values of all the cations. The distance that each cation moved obviously varied: Ag+ moved 0cm, Co2+ moved 3.4cm, Cu2+ moved 4.0cm, and Fe3+ moved 5.3 cm. With the value of the solvent’s moved distance and the value of each cation’s moved distance (D), the Rf values of each cation could then be calculated using Rf = . Each Rf value represents the ratio between the distance moved by the cation and the distance moved by the solvent. By performing a calculation for each cation’s Rf value, the Rf values found for Ag+, Co2+, Cu2+, and Fe3+ were 0.000, .48, .57, and .75 respectively.
In …show more content…
They also fairly reflect the Rf values found in the known mixture, which was intended to be used as a reference point. The Paper Chromatography experiment was successful in displaying a method in which cations could be identified. This was proven in the experiment by the examination of the unknown mixture, which was properly identified by comparing the physical properties of the unknown cations (and the Rf values) to the previous data of the known cations. The Paper Chromatography process was better understood as a result of this experiment. Overall, the data and significant figures in the calculations are fairly accurate, and could’ve potentially been more accurate with less human