Organic chemistry Topic chromatography 1. think about what happens when you spil
ID: 520081 • Letter: O
Question
Organic chemistry
Topic
chromatography
1. think about what happens when you spill red wine on a table of cloth. where does the colored compound start and where does some of it ends? you try to wash it out quickly with water, and it only helps a little, then you try rubbing alcohol (70% of aqueous isopropanol) and it does wash out completely, albeit not easily. Describe what happens to the colored compounds as they are slowly washed out. (Make sure your answers sound like those of a chemist, not a laundry maid)
2. think about dying cloth-maybe you have done tie-dying before. Describe where the color starts and where some of it ends up. ( again, give answers like a chemist)
3. The basic food colors are red,blue,green and yellow. Think about what you know about colors and predict which of these might be single colored compounds and which ones might contain more than one. write down your predictions. if you have the colors listed and want a purple color, what would you do?
please help me answer this question
Explanation / Answer
1. When red wine is spilled on table cloth, it flows until it is adsorbed by the cloth somewhat like an analyte passing through and being adsorbed on a stationary phase. Whn the cloth is washed with water, very little of the compound is removed as the organic molecules present in the compound are not soluble in water. As soon as alcohol is used, which is a an organic solvent, the organic compound moves from stationary phase to mobile phase and is wadhed out.
2. Dying also follows the principle of surface tension and movement of the dying compound across the stationary phase with the aid of a mobile phase.
3. Red, blue and yellow are three primary colors. So, compounds showing these colors might be single colored compounds. Green is produced by mixing yellow and blue. So, green colored compound can contain more than one. Purple can be produced my mixing red and blue colors.
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