Chemistry inquiry lab on Separation of a Dye Mixture Using Chromatography
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Chemistry inquiry lab on Separation of a Dye Mixture Using Chromatography
In an organic chemistry lab of separation of Neutral and Acidic substances to separate a mixture...
In an organic chemistry lab of separation of Neutral and Acidic substances to separate a mixture of equal amounts of dibenzalacetone and benzoic acid. My recovery of the samples gave me a melting point for benzoic acid (121-122 C) while the actual mp is (122-123 C ) and for dibenzalacetone i got a melting point of (108-109.7 C) while the actual mp is ( 110-111 C). what do the melting points tell you about the purity of the compounds recovered....
Hello all! We did a lab about column chromatography, objective was Separation of a Fluorene and Fluorenol mixture. Initi...
Hello all! We did a lab about column chromatography, objective was Separation of a Fluorene and Fluorenol mixture. Initially we had 0.20 g of the solid mixture (fluorene and fluorenol) I didn't manage to get a final mass reading so im not sure, please go ahead and make a guess for the following, see what makes sense: > Please go ahead and calculuate final mass of fluorene and fluorenone and the melting points of both
Explain the various factors responsible for separation of components of a mixture in chromatography. Explain about...
Explain the various factors responsible for separation of components of a mixture in chromatography. Explain about the classification of chromatography with few examples. Draw a block diagram of gas chromatograph and explain the function of each component Write a note on the micro syringe use to inject the liquid sample into gas chromatograph. Write a note on principle of working of Gas chromatograph. (How to prepare GC for analysis) Write a note on analysis of chromatogram (Types the method of...
LAB 2A SEPARATION OF LIQUIDS BY SIMPLE DISTILLATION ANALYSIS BY GAS CHROMATOGRAPHY LAB 2A Pre-Lab Questions...
LAB 2A SEPARATION OF LIQUIDS BY SIMPLE DISTILLATION ANALYSIS BY GAS CHROMATOGRAPHY LAB 2A Pre-Lab Questions NAME DATE LAB SECTION Answer the following questions in the pre-lab section of your notebook. 1. Which compound, acetone or 1-propanol, has the higher boiling point? Why? 2. Do you expect acetone to be soluble in 1-propanol? Why or why not? Model: For this question, you will be graded on completion, rather than correctness of the model. In the post-lab, you will be asked...
Hello all, we did a lab about column chromatography, objective was Separation of a Fluorene and...
Hello all, we did a lab about column chromatography, objective
was Separation of a Fluorene and Fluorenol mixture.
Please answer the following (do not write in cursive):
Introduction and Background: Introduce technique of normal phase column chromatography and thin-layer chromatography. O Purpose o The principle of how they work – include the mobile and stationary phases o Rf value O Applications
In my organic chemistry lab we are performing a gas chromatography experiment and I need help...
In my organic chemistry lab we are performing a gas
chromatography experiment and I need help with our prelab
assignment, thanks!
Question 3 1 pts If compound A elutes (comes off) a GC column earlier than compound B in a temperature gradient GC run. What can be inferred about their respective boiling points? Compound A probably has a lower boiling point than that of compound B. Compound A and B have the same boiling point. Elution time does not correlate...
Chemistry lab question! Help please! A student finds a solution of blue dye #2 (another food...
Chemistry lab question! Help please!
A student finds a solution of blue dye #2 (another food dye we are not using in this lab) in a 1.0 cm cuvette has a maximum absorbance of 0.572 at 613 nm. The molar extinction coefficient, E, of blue #2 at the same wavelength is 1.21 * 10^4 M^-1 cm^-1. Calculate the concentration of this solution. The same student as in question 3 brings the blue dye #2 solution to her friend Bob to...
These questions refer to an organic dye lab that was done in organic chemistry. 1; Discuss what features a molecule need...
These questions refer to an organic dye lab that was done in organic chemistry. 1; Discuss what features a molecule needs to possess in order to be classified as a dye, and explain the different means in which they adhere to fabrics. 2; Describe how indigo and azo dyes differ from each other, both in how they are prepared and their mechanism of action for dyeing clothing, be sure to include structures/mechanisms.
10. Consider the separation of the mixture of the compounds shown below using TLC analysis using...
10. Consider the separation of the mixture of the compounds shown below using TLC analysis using silica gel plates. (2pts each) oso ooo a OH a) What would be a reasonable eluent that could be used to separate all three components on the TLC plate? Explain your reasoning. b) List the order of elution when using your proposed eluent. Explain your reasoning using complete sentences. c) What will be the effect on separation if you increase the polarity of your...
4. You plan to separate a mixture of the two compounds below using a column chromatography...
4. You plan to separate a mixture of the two compounds below using a column chromatography normal conditions, which of the compounds would you expect to be eluted off the column first? Expla
LAB 2A SEPARATION OF LIQUIDS BY SIMPLE DISTILLATION ANALYSIS BY GAS CHROMATOGRAPHY LAB 2A Pre-Lab Questions NAME DATE LAB SECTION Answer the following questions in the pre-lab section of your notebook. 1. Which compound, acetone or 1-propanol, has the higher boiling point? Why? 2. Do you expect acetone to be soluble in 1-propanol? Why or why not? Model: For this question, you will be graded on completion, rather than correctness of the model. In the post-lab, you will be asked...
Hello all, we did a lab about column chromatography, objective
was Separation of a Fluorene and Fluorenol mixture.
Please answer the following (do not write in cursive):
Introduction and Background: Introduce technique of normal phase column chromatography and thin-layer chromatography. O Purpose o The principle of how they work – include the mobile and stationary phases o Rf value O Applications
In my organic chemistry lab we are performing a gas
chromatography experiment and I need help with our prelab
assignment, thanks!
Question 3 1 pts If compound A elutes (comes off) a GC column earlier than compound B in a temperature gradient GC run. What can be inferred about their respective boiling points? Compound A probably has a lower boiling point than that of compound B. Compound A and B have the same boiling point. Elution time does not correlate...
Chemistry lab question! Help please!
A student finds a solution of blue dye #2 (another food dye we are not using in this lab) in a 1.0 cm cuvette has a maximum absorbance of 0.572 at 613 nm. The molar extinction coefficient, E, of blue #2 at the same wavelength is 1.21 * 10^4 M^-1 cm^-1. Calculate the concentration of this solution. The same student as in question 3 brings the blue dye #2 solution to her friend Bob to...
10. Consider the separation of the mixture of the compounds shown below using TLC analysis using silica gel plates. (2pts each) oso ooo a OH a) What would be a reasonable eluent that could be used to separate all three components on the TLC plate? Explain your reasoning. b) List the order of elution when using your proposed eluent. Explain your reasoning using complete sentences. c) What will be the effect on separation if you increase the polarity of your...
4. You plan to separate a mixture of the two compounds below using a column chromatography normal conditions, which of the compounds would you expect to be eluted off the column first? Expla
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