7 cm The R f value for the farthest traveled band with Acetone as a solvent was

7 cm the r f value for the farthest traveled band

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which was orange and traveled 0.7 cm. The R f value for the farthest traveled band with Acetone as a solvent was 0.179. The chromatography of black ink in hexane did not cause the ink to travel at all, and thus the distance and R f value was zero. This data is not theoretically justified. Water should have traveled the least distance because it is polar, and is attracted to the polar cellulose in the paper, keeping it in the stationary phase. The results may be skewed because we did not cover the beakers of solvent, thus the atmosphere in the beaker was not able to become saturated in the solvent; this is the main source of error for Part A. Part B: The purpose of Part B was to separate the components of spinach extract by applying the concepts of equilibria. For the chromatography of spinach in water, the solvent traveled a total of 5.3 cm. The pigment from the spinach did not travel up the paper, thus there were no bands and the R f value was zero. In acetone, the chromatograph resulted in one green band which traveled 3.4 cm, and the acetone traveled a total distance of 3.6 cm. The R f value was 0.944. The solvent hexane traveled a total of 2.85 cm, and yielded one yellow bar which traveled as far as the hexane did up the paper (2.85 cm). Because of this, the R f value was 1. Sources of error for both Part A and Part B include the experimental error of not waiting long enough for the solvent to finish traveling up the paper. This may have skewed the R f value, making it appear larger than it is. Another source of potential experimental error was that the solvents (especially hexane) began to evaporate quickly. Not marking how far the solvent traveled before it began to evaporate would have made the distance the solvent traveled appear less far as well.
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