Polarity index is a value indicative of the polarity of a compound (higher polarity index means...
Polarity index is a value indicative of the polarity of a compound (higher polarity index means more polar). Compare the polarity index of acetone, ethyl acetate, and hexane (available via the solvent miscibility table on Blackboard). Use your uncanny knowledge of chemical structures to evaluate the relative polarity of caffeine, aspirin, and acetaminophen. Use this information to predict which compound is likely to elute with each of the solvents employed in your chromatographic separation.
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Polarity index is a value indicative of the polarity of a
compound (higher polarity index means...
7.The major product(s) in the following reaction is (are) CH,CH CH, CH OH OCH CHy OCHy...
7.The major product(s) in the following reaction is (are) CH,CH CH, CH OH OCH CHy OCHy CH,CH CHy CH,CH [A] Only1 (B) Only 1IC) A racemic mixture of [1) and [I) D] None of these s. Which of the following represents the order of solvents in increasing polarity from left to A) methanol, acetone, ethyl acetate, hexanes C) acetone, hexanes, methanol, ethyl acetate D) ethyl acetate, methanol, hexanes, acetone 9. In Thin Layer Chromatography (TLC) Re stands for A) Rate...
3) Assume that you are given a mixture of compound A and compound B, and it...
3) Assume that you are given a mixture of compound A and compound B, and it is your job to separate them. You are also given the following table of information. a. Describe in detail how you would separate these two compounds. Tell what solvent or solvents you would use, and explain your choice(s). R, in pure ethyl acetate 0.90 0.80 R, in 100% hexane R, in 50% ethyl Compound A 0.70 opoB 0.05 acetate in hexane 0.85 0.50 b....
Hi can someone help me with my pre lab theory questions (1,2,3) on rate of elution...
Hi can someone help me with my pre lab theory questions (1,2,3)
on rate of elution or Rf? Here is some background below. Please
help explain as many as possible (1-3)! I dont really get the
relation ships in this lab, thank you!
1. What factors affect the rate of elution in organic compounds? 2. Explain what is the relationship between polarities of compounds (polar/non- polar compound) and rate of elution (Rf). 3. Explain what is the relationship between solvent...
PART IV. MISCIBILITY OF TWO LIQUIDS 1. For the first two liquids in Table IV-B (the...
PART IV. MISCIBILITY OF TWO LIQUIDS
1. For the first two liquids in Table IV-B (the solvents in the
miscibility tests), use the molecular structures provided in the
Introduction to identify each liquid as polar or nonpolar. Put an X
in the appropriate column.
2. For the remaining liquids in Table IV-B, determine if they
are primarily polar, primarily nonpolar, or both polar and polar
based on your observations in Table III-A and based on the polarity
of the solvent....
Discussion Questions The structures of acetanilide and malonic acid are provided below 1. For each structure,...
Discussion Questions The structures of acetanilide and malonic acid are provided below 1. For each structure, draw circles around the polar and nonpolar regions of the molecule, and label each circled regiorn with the type of intermolecular attractive force it can use to interact with other molecules. Acetanilide Malonic Acid но CH2 OH 2. Now-thoroughly explain (on the basis of polarity/nonpolarity and intermolecular attractive forces) how the acetanilide was separated from the malonic acid by recrystallization from water. And explain...
Acid/Base Extraction 1. Provide a flow chart detailing the acid/base extraction/separation of the compounds shown below....
Acid/Base Extraction
1. Provide a flow chart detailing the acid/base
extraction/separation of the compounds shown below. Your answer
must employ the following reagents: methylene chloride,
hydrochloric acid (1M & 6M), sodium hydroxide (1M & 6M),
10% sodium bicarbonate (aq). Clearly indicate the product(s) and
layers formed following each step of your separation scheme.
IMPORTANT: p-cresol is soluble in sodium hydroxide solution but
insoluble in neutral water or sodium bicarbonate solution. 2-
ethylbenzoic acid is soluble in both sodium hydroxide and...
Provide a flow chart detailing the acid/base extraction/separation of the compounds show below. Your answer must...
Provide a flow chart detailing the acid/base extraction/separation of the compounds show below. Your answer must employ the following reagents: methylene chloride, hydrochloric acid (1M & 6M), sodium hydroxide (1M & 6M), 10% sodium bicarbonate (aq). Clearly indicate the product(s) and layers formed following each step of your separation scheme. IMPORTANT: p-cresol is soluble in sodium hydroxide solution but insoluble in neutral water or sodium bicarbonate solution. 2-ethylbenzoic acid is soluble in both sodium hydroxide and sodium bicarbonate solutions. Use...
Construct a flow chart describing the seperation of the mixture and the isolation of each compound...
Construct a flow chart describing the seperation of the
mixture and the isolation of each compound in this experiment. (Lab
steps/procedures includes for reference)
4. Construct a flow chart describing the separation of the mixture and the isolation of each compound in this experiment. A commonly used method of separating a mixture of organic compounds is known as liquid-liquid extraction. Most reactions of organic compounds require extraction at some stage of product purification. In this experiment you will use extraction...
13. What can you say about an unknown compound that gave a pouldve test with 2...
13. What can you say about an unknown compound that gave a pouldve test with 2 hydrazine and a positive test with the Jones Reseat? now compound that gave a pouldve test with 2,4-dinitrophenyl 14 What can you say about sa unknown compound when dissolved in distilled water and tested with peper, pave an estimated pH of about 81. 15. What can you say about an unknown compound that turned a wet plece al blue litmus red? 16. What can...
Experiment Write Up Proposal You will write up a synthesis procedure for one reaction that could...
Experiment Write Up Proposal You will write up a synthesis procedure for one reaction that could be potentially run in a face- to-face Chem 2321 lab session. Your proposal will include an introduction and procedure. The procedure will include step-by-step instructions for running the reaction (including reaction monitoring), work-up. (product isolation and purification), and analysis (characterization). You will need to include sample calculations for percent yield and provide sample spectra analysis. You must upload your proposal as a single document...
7.The major product(s) in the following reaction is (are) CH,CH CH, CH OH OCH CHy OCHy CH,CH CHy CH,CH [A] Only1 (B) Only 1IC) A racemic mixture of [1) and [I) D] None of these s. Which of the following represents the order of solvents in increasing polarity from left to A) methanol, acetone, ethyl acetate, hexanes C) acetone, hexanes, methanol, ethyl acetate D) ethyl acetate, methanol, hexanes, acetone 9. In Thin Layer Chromatography (TLC) Re stands for A) Rate...
3) Assume that you are given a mixture of compound A and compound B, and it is your job to separate them. You are also given the following table of information. a. Describe in detail how you would separate these two compounds. Tell what solvent or solvents you would use, and explain your choice(s). R, in pure ethyl acetate 0.90 0.80 R, in 100% hexane R, in 50% ethyl Compound A 0.70 opoB 0.05 acetate in hexane 0.85 0.50 b....
Hi can someone help me with my pre lab theory questions (1,2,3)
on rate of elution or Rf? Here is some background below. Please
help explain as many as possible (1-3)! I dont really get the
relation ships in this lab, thank you!
1. What factors affect the rate of elution in organic compounds? 2. Explain what is the relationship between polarities of compounds (polar/non- polar compound) and rate of elution (Rf). 3. Explain what is the relationship between solvent...
PART IV. MISCIBILITY OF TWO LIQUIDS
1. For the first two liquids in Table IV-B (the solvents in the
miscibility tests), use the molecular structures provided in the
Introduction to identify each liquid as polar or nonpolar. Put an X
in the appropriate column.
2. For the remaining liquids in Table IV-B, determine if they
are primarily polar, primarily nonpolar, or both polar and polar
based on your observations in Table III-A and based on the polarity
of the solvent....
Discussion Questions The structures of acetanilide and malonic acid are provided below 1. For each structure, draw circles around the polar and nonpolar regions of the molecule, and label each circled regiorn with the type of intermolecular attractive force it can use to interact with other molecules. Acetanilide Malonic Acid но CH2 OH 2. Now-thoroughly explain (on the basis of polarity/nonpolarity and intermolecular attractive forces) how the acetanilide was separated from the malonic acid by recrystallization from water. And explain...
Acid/Base Extraction
1. Provide a flow chart detailing the acid/base
extraction/separation of the compounds shown below. Your answer
must employ the following reagents: methylene chloride,
hydrochloric acid (1M & 6M), sodium hydroxide (1M & 6M),
10% sodium bicarbonate (aq). Clearly indicate the product(s) and
layers formed following each step of your separation scheme.
IMPORTANT: p-cresol is soluble in sodium hydroxide solution but
insoluble in neutral water or sodium bicarbonate solution. 2-
ethylbenzoic acid is soluble in both sodium hydroxide and...
Provide a flow chart detailing the acid/base extraction/separation of the compounds show below. Your answer must employ the following reagents: methylene chloride, hydrochloric acid (1M & 6M), sodium hydroxide (1M & 6M), 10% sodium bicarbonate (aq). Clearly indicate the product(s) and layers formed following each step of your separation scheme. IMPORTANT: p-cresol is soluble in sodium hydroxide solution but insoluble in neutral water or sodium bicarbonate solution. 2-ethylbenzoic acid is soluble in both sodium hydroxide and sodium bicarbonate solutions. Use...
Construct a flow chart describing the seperation of the
mixture and the isolation of each compound in this experiment. (Lab
steps/procedures includes for reference)
4. Construct a flow chart describing the separation of the mixture and the isolation of each compound in this experiment. A commonly used method of separating a mixture of organic compounds is known as liquid-liquid extraction. Most reactions of organic compounds require extraction at some stage of product purification. In this experiment you will use extraction...
13. What can you say about an unknown compound that gave a pouldve test with 2 hydrazine and a positive test with the Jones Reseat? now compound that gave a pouldve test with 2,4-dinitrophenyl 14 What can you say about sa unknown compound when dissolved in distilled water and tested with peper, pave an estimated pH of about 81. 15. What can you say about an unknown compound that turned a wet plece al blue litmus red? 16. What can...
Experiment Write Up Proposal You will write up a synthesis procedure for one reaction that could be potentially run in a face- to-face Chem 2321 lab session. Your proposal will include an introduction and procedure. The procedure will include step-by-step instructions for running the reaction (including reaction monitoring), work-up. (product isolation and purification), and analysis (characterization). You will need to include sample calculations for percent yield and provide sample spectra analysis. You must upload your proposal as a single document...
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