Chromatography of Food Dyes

Experiment 11 Lab Assignment Answer analyse: Chromatography of Food Dyes Name: Pre-Lab: Define the Rf value of a compound: It is the distance traveled by the compound rakehell by the distance traveled by the resultant usance front. data and Observations: Record the distance travelled by the prototype and the solution in the table below and calculate the Rf values. slacken 1. Color| bad1|Blue2|Red3|Red40| lily-livered5| discolour6| resoluteness| infinite(mm)|50mm|0mm|10mm|21mm|28mm|23mm|50mm| Rf|1|0|0.2|0.42|0.56|0.46|1| Table 2. union|Kool-Aid®: Grape|Kool-Aid®: Strawberry|Solvent| outdo (mm)| 19mm(red)|28mm(red)|48mm| distance (mm)| 47mm(blue)||48mm| Rf|0.39 & 0.98|0.58|1| Table 3. spunk| computer memory Red| submit Yellow| repositing Green|Store Blue|Solvent| Distance (mm)|33mm|30mm|34mm(yellow)|50mm|50mm| Distance (mm)|||50mm(blue)||50mm| Rf|0.66|0.60|0.68 & 1|1|1| Table 4. Substance|M&MBrown|M&M Yellow|M&MBlue|M&MRed|Solvent| Distance (mm)|20mm|25mm|5mm|13mm|50mm| Rf|0.40|0.50|0.10|0.26|1| A.The FD&C color(s) qualification up the unknown region = Red and Blue. B.Brand name of the FD&C color(s) from the grocery butt in solid food = Market larder C.

The FD&C color(s) qualification up the grocery store food colorings = Red #40, Blue #1, Yellow #5, Yellow #6. D.The FD&C color(s) making up the Kool-Aid drinks. = Red #40 and Blue #1. E.The FD&C color(s) making up the M&Ms®. = Yellow #6, Yellow #5, Red #40, Blue #1, Blue #2. Post-Lab Questions: 1. wherefore cant a pen be used to draw the baseline on the chromato graphy wallpaper? Because the ink would bl! eed as well and index contaminate the results. 2. Why is it authorized to stop the chromatograph before the solvent reaches the top of the paper ? Because if the solvent gets to the top, I could miss the quantity points because they would keep moving. 3.Why is it important to keep the tinge spots preceding(prenominal) the solvent level? Because the dye spots, upon...If you want to get a full essay, order it on our website: OrderEssay.net

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