Lab 11

Experiment 11 Lab Assignment Answer tacking: Chromatography of Food Dyes Name: Pre-Lab: Define the Rf value of a compound The rf value is the withdrawnness the compound moves coitus to the distance the solvent moves. Data and Observations: Record the distance traveled by the sample and the solvent in the table beneath and calculate the Rf values. Table 1. Color standoffishness(m luscious1 blue sky2 Red3 Red40 colour5 chickenhearted6 33 3 10 22 42 30 .55 .05 .17 .37 .70 .50 m) Rf Solvent 60 Table 2. Kool-Aid®: grape vine Kool-Aid®: Strawberry Distance (mm) Red: 5 10 Distance (mm) deplorable:17 n/a Rf .08 and .28 .17 Substance Solvent 60 Table 3. Substance Distance McK Red McK Yellow McK unfledged McK Blue Solvent 51 60 Yellow-50 Red-33 80 Blue-72 Blue-70 80 .63 and .90 .41 and .88 (mm) Distance ( mm) Rf .64 .75 Table 4. Substance M&M M&M M&M M&M Green Yellow Blue Red Distance (mm) 8 30 50 10 Rf .10 .38 .63 Solvent .13 A.

80 The FD&C color(s) qualification up the unbeknownst(predicate) = Blue #1, Red #40, Yellow #42 B. Brand name of the FD&C color(s) from the grocery repositing food = Blue #1, Red #40 C. The FD&C color(s) making up the grocery store food colorings = McKormicks- Yellow #42, Blue #1, Red #40 D. The FD&C color(s) making up the Kool-Aid drinks. = pipeline= Red #3 and Blue #1, Strawberry= Red #3 E. The FD&C color(s) making up th! e M&Ms®. = Blue #1, Yellow #6, Red #3, Post-Lab Questions: 1. wherefore cant a compile be utilise to draw the baseline on the chromatography musical theme? Because the ink would separate. 2. Why is it all-important(a) to stop the chromatograph before the solvent reaches the top of the paper ? Without knowing where the solvent reaches the top, you can not calculate the Rf. 3.Why is it important to keep the dye spots in a higher place the...If you want to deject a full essay, order it on our website: OrderCustomPaper.com

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