Please outline the main steps of an efficient column chromatographic separation of a non-polar compound A...
Please outline the main steps of an efficient column chromatographic separation of a non-polar compound A from a medium compound B and a non-polar chemical (C). C is slightly less polar than A.
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Please outline the main steps of an efficient column
chromatographic separation of a non-polar compound A...
The column chromatography procedure for the separation of a polar and a non- polar compound calls...
The column chromatography procedure for the separation of a polar and a non- polar compound calls for sequential elution with the following solvents: hexane, 70:30 hexane : acetone, acetone and 80:20 acetone : methanol. Why it is important to follow this solvent order?
Please explain the concept of chromatographic separation and formulas in the above question. 2) If a...
Please explain the concept of chromatographic separation and
formulas in the above question.
2) If a big centrifuge with the bowl diameter of 1m rotates at
60 rpm, at what speed (rpm) does a smaller centrifuge with a
diameter of 0.5 m need to be operated for achieving the same
separation factor?
(a) 85
(b) 120
(c) 30
(d) 42
3) What is the linear flow rate (superficial velocity in cm/h)
in a chromatographic column of 1.0 cm inner diameter...
6a) During experiment 7, you performed column chromatography in order to separate two main compounds from...
6a) During experiment 7, you performed column chromatography in order to separate two main compounds from tomato paste. What are these two compounds? 6b) Is this separation technique a chemical or physical method of separation? 6c) What color is each of these compounds? What about their molecular structure gives rise to their color? 6d) During the experiment, we only observed one band on the column even though we should have observed two. However, you may have noticed, we had in...
looking for a check of my work, is this correct? if not please let me know....
looking for a check of my work, is this correct? if not please
let me know. thanks!
1. (23 Total Points) Gas Chromatography a. (5 pts) Circle the BEST answer for the question below. Of the compounds listed below, which would you expect to eluto last from a nonpolar gas chromatographic column? 3 • n-Propanol (CH3CH2CH2OH) Polar Polar = 7* (mPoland 1. Methanol (CH3OH) Polar NON-Polar = 2nd 4. n-Butanol (CH3CH2CH2CH2OH) ВР 1st Low C . n-Pentanol (CH3CH2CH2CH2CH2OH) and Higher...
What is the main purpose of running a column chromatography? Similar to TLC. column chromatography is...
What is the main purpose of running a column chromatography? Similar to TLC. column chromatography is based on analytes being partitioned between a stationary phase (not moving) and a mobile phase (moving). What is most commonly used as stationary phase in a column? Is this material polar or non-polar? In this experiment, you will use different solvents to run column chromatography separation of different pigments extracted from spinach leaves. These solvents are a mixture of acetone and hexanes. (a) What...
Suppose you are trying to separate a mixture of three compounds with the help of TLC....
Suppose you are trying to separate a mixture of three compounds with the help of TLC. Compound C is of medium polarity. Compounds A and B are of high polarity, but A is slightly less polar than B. Sketch the TLC's that you would expect developing in a chamber with i) a non-polar solvent, ii) a solvent of medium polarity, iii) a highly polar solvent.
can you please answer all 1. When you run a TLC of the reaction in ethyl...
can
you please answer all
1. When you run a TLC of the reaction in ethyl acetate : hexanes 1:1, the plate below is produced. Give a solvent system that would be expected to produce greater separation and a BRIEF (8 words) justification about your choice. (5 points) 7 6 5 4 3 b. Calculate the R for the bottom spot. (5 points) c. Which compound on the TLC plate is the most polar? (5 points) 2. Why is it...
7). a). Is the acetone molecule non-polar or polar? Circle. Non-polar Polar b). Sketch pictures of...
7). a). Is the acetone molecule non-polar or polar? Circle. Non-polar Polar b). Sketch pictures of the intermolecular forces that would occur between the molecules of acetone and the molecules of 2- propanone if you have a mixture of the two liquids. What would be the main type of IMF that is responsible for the attraction? (Give a name for the IMF). c). The pentane molecule and the 2-pentanone molecule both have five carbon atoms on their structures. Why 2-pentanone...
Please help I need to fill in the blanks by using the compounds and producers below the picture. Thanks! 422 (4 pts) Using the flow-chart below, outline a separation of Benzoic acid (s) (1), benzyl...
Please help I need to fill in the blanks by using the compounds
and producers below the picture. Thanks!
422 (4 pts) Using the flow-chart below, outline a separation of Benzoic acid (s) (1), benzyl amine d) (2), and Naphthalene (s) (3). From the list of procedural steps below, write the letter corresponding to each procedure in the appropriate Ellipse boxes. Each procedure ma once, more than once or not at all. Usi corresponding to each structure in the appropriate...
The student loads the solid onto a column, prepacked with silica gel, and elutes the column...
The student loads the solid onto a column, prepacked with silica gel, and elutes the column with an appropriate solvent system to allow the components to be completed separated. 11. Based on your understanding of column chromatography, which of the following solvent systems is most likely to yield the best separation of the two components in this mixture? Please explain your answer BRIEFLY (5 pts)! The ranking of solvent polarity is: MeOH>ethyl acetate> hexane (ie, MeOH is the most polar)....
Please explain the concept of chromatographic separation and
formulas in the above question.
2) If a big centrifuge with the bowl diameter of 1m rotates at
60 rpm, at what speed (rpm) does a smaller centrifuge with a
diameter of 0.5 m need to be operated for achieving the same
separation factor?
(a) 85
(b) 120
(c) 30
(d) 42
3) What is the linear flow rate (superficial velocity in cm/h)
in a chromatographic column of 1.0 cm inner diameter...
6a) During experiment 7, you performed column chromatography in order to separate two main compounds from tomato paste. What are these two compounds? 6b) Is this separation technique a chemical or physical method of separation? 6c) What color is each of these compounds? What about their molecular structure gives rise to their color? 6d) During the experiment, we only observed one band on the column even though we should have observed two. However, you may have noticed, we had in...
looking for a check of my work, is this correct? if not please
let me know. thanks!
1. (23 Total Points) Gas Chromatography a. (5 pts) Circle the BEST answer for the question below. Of the compounds listed below, which would you expect to eluto last from a nonpolar gas chromatographic column? 3 • n-Propanol (CH3CH2CH2OH) Polar Polar = 7* (mPoland 1. Methanol (CH3OH) Polar NON-Polar = 2nd 4. n-Butanol (CH3CH2CH2CH2OH) ВР 1st Low C . n-Pentanol (CH3CH2CH2CH2CH2OH) and Higher...
What is the main purpose of running a column chromatography? Similar to TLC. column chromatography is based on analytes being partitioned between a stationary phase (not moving) and a mobile phase (moving). What is most commonly used as stationary phase in a column? Is this material polar or non-polar? In this experiment, you will use different solvents to run column chromatography separation of different pigments extracted from spinach leaves. These solvents are a mixture of acetone and hexanes. (a) What...
Suppose you are trying to separate a mixture of three compounds with the help of TLC. Compound C is of medium polarity. Compounds A and B are of high polarity, but A is slightly less polar than B. Sketch the TLC's that you would expect developing in a chamber with i) a non-polar solvent, ii) a solvent of medium polarity, iii) a highly polar solvent.
can
you please answer all
1. When you run a TLC of the reaction in ethyl acetate : hexanes 1:1, the plate below is produced. Give a solvent system that would be expected to produce greater separation and a BRIEF (8 words) justification about your choice. (5 points) 7 6 5 4 3 b. Calculate the R for the bottom spot. (5 points) c. Which compound on the TLC plate is the most polar? (5 points) 2. Why is it...
7). a). Is the acetone molecule non-polar or polar? Circle. Non-polar Polar b). Sketch pictures of the intermolecular forces that would occur between the molecules of acetone and the molecules of 2- propanone if you have a mixture of the two liquids. What would be the main type of IMF that is responsible for the attraction? (Give a name for the IMF). c). The pentane molecule and the 2-pentanone molecule both have five carbon atoms on their structures. Why 2-pentanone...
Please help I need to fill in the blanks by using the compounds
and producers below the picture. Thanks!
422 (4 pts) Using the flow-chart below, outline a separation of Benzoic acid (s) (1), benzyl amine d) (2), and Naphthalene (s) (3). From the list of procedural steps below, write the letter corresponding to each procedure in the appropriate Ellipse boxes. Each procedure ma once, more than once or not at all. Usi corresponding to each structure in the appropriate...
The student loads the solid onto a column, prepacked with silica gel, and elutes the column with an appropriate solvent system to allow the components to be completed separated. 11. Based on your understanding of column chromatography, which of the following solvent systems is most likely to yield the best separation of the two components in this mixture? Please explain your answer BRIEFLY (5 pts)! The ranking of solvent polarity is: MeOH>ethyl acetate> hexane (ie, MeOH is the most polar)....
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