Chromatography Purple free essay sample

Color Chromatography Lab Background Information and Research 1. Paper chromatography is a way separate the components of a mixture. 2. It can be used for purification, separation of mixtures, and identify of components. Purpose The purpose of this experiment is to take a look at what chromatography is really about. It helps us see what we dont normally see, such as all the hidden colors that show up in the different colors. Materials Four different markers. I used Purple, Green, Red and Black. Rubbing alcohol 2 coffee filters 2 glasses or plastic cups Pencil Ruler Tape Table salt Water Measuring cups/spoons Clean pitcher Procedure 1. First I cut the coffee filter into 2 rectangular strips using a ruler to make it three cm by nine cm. 2. I drew a line with a pencil one cm from the end of one of the coffee filter strips.? 3. Along the like that I drew, I placed a dot of color, one for each of the colors I chose about 0. We will write a custom essay sample on Chromatography Purple or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page 5 cm apart and each of he colors.? 4. I made a prediction of the colors that I think ill see from the ink. 5. I prepared salt solution by mixing 1/8 tsp of salt and three cups of water in a pitcher. Stir or shake the solution until it is dissolved. This will produce a 1% salt solution. 6. I poured the solution into a tall glass so that the liquid goes to 1/4th from the bottom. ? 7. Next i taped the strip to a pencil and rested it on top of the jar so that the strip hangs inside the jar, making sure the solution doesnt make any contact with the color dots. ? 8. When the salt water reached 1/4 from the top edge of the paper, I removed it from the glass. 9. I placed it on the counter to dry.? 10. Lastly I repeat steps 2-10 using the second strip of paper and a new glass, using the same four colors using the alcohol instead of the saltwater. Data and Observations †¢I thought the black was going to travel the furthest. †¢Create an organized and labeled data table that lists the color and distance traveled of each pigment separated from each original candy color or ink type. Remember to have two separate sections or tables for the two solutions (salt water and alcohol) used. Color distance traveled in alcohol distance traveled in salt water Purple 7. 1cm 6. 9cm Green 5. cm 4. 7cm Red 6. 9cm 7. 1cm Black 7. 4cm 7. 5cm Discussion and Conclusion: The first part of this section discusses the observations and results of the lab as well as any mistakes that may have been made (or what measures were taken to try to avoid mistakes) and what improvements, if any, you can think of for the procedure for the next time the lab will be conducted. A comparison of how each solution (salt water and alcohol) separated the pigments from each color of candy or ink type. Which solution worked better at separating each of the pigments (it may be different for different candy colors or inks), and why do you think that is? i believe that it traveled a little bit further with the alcohol than it did with the salt water, i think it worked better with the alcohol. †¢If you had allowed less time for the lab (stopping the separation process when the solution was halfway up the paper), how do you think that would have affected your results? I dont think it would allow all the colors to separate completely †¢What pigment colors traveled farther up the paper? What pigment traveled the least? Was it the same or different when those pigments appeared in other candy colors or inks? Was it the same or different when separated by alcohol instead of salt water? The pigment that traveled the furthest was black. The color that traveled the least was green. It traveled further when i did it with alcohol.