How can you visualize anthranilic acid on TLC plates? How can you visualize carboxylic acids on...
How can you visualize anthranilic acid on TLC plates? How can you visualize carboxylic acids on TLC plates? Three different methods or reagents for both.
Homework Answers
Visuaizing agents for anthranilic acid
1. Iodine in iodine chamber can be used as it poses unsaturation it will absorb iodine.
2. UV light visualization technique also can be used due to presence of aromatic structure
3. vanillin stains can be used as the structure contain amine
Visuaizing agents for carboxylic acid
1. Bromocresol Green Visualization Colors: Yellow to green
2. p-anisaldehyde can be used due to presence of oxygen
3. Phosphomolybdic acid which act as reducing agent to reduce the acid groups
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How can you visualize anthranilic acid on TLC plates? How can
you visualize carboxylic acids on...
9. Carboxylic acids often produce a streak rather than a spot when analyzed on silica gel...
9. Carboxylic acids often produce a streak rather than a spot when analyzed on silica gel TLC plates. Adding a drop or two of acetic acid to the eluant reduces streaking. Explain why carboxylic acids may streak on silica gel TLC plates and why adding acetic acid to the eluent reduces streaking. Amines also often streak on silica gel TLC. What might you add to the elu- ant to reduce such streaking? a. b.
For TLC plates of amino acids: You will be using a mixture of 5:1:4 volume ratio...
For TLC plates of amino acids: You will be using a mixture of 5:1:4 volume ratio of butanol, glacial acetic acid (pure acetic acid), and water, pH of water is 7, in this lab. Assume that butanol is the same as water in terms of a pH calculation. The density of acetic acid is 1.05 g/ml. The molecular weight of acetic acid is 60.05 g/mol. The Ka of acetic acid HAc is 1.8*10^-5. You can make the assumption that [H+]...
True or false: a) The electron-withdrawing substituents do not impact the acidity of carboxylic acids. b)...
True or false: a) The electron-withdrawing substituents do not impact the acidity of carboxylic acids. b) Hydrolysis of nitriles is a method to synthesize carboxylic acid. c) The order of reactivity of carboxylic acid derivatives is as follow: Acyl chloride > Acid anhydride > Ester > Amide. d) SOCl2, PCl3 and PCl5 are three types of special reagents to convert carboxylic acid to acyl chloride. e) Acyl chlorides are the most reactive common acyl derivatives, and can be used to...
1. How does the sample separate on a TLC plate? 2.What are some ways to visualize...
1. How does the sample separate on a TLC plate? 2.What are some ways to visualize a TLC plate? Why may it be necessary to have more than one method to visualize a TLC plate? 3.Describe how to obtain a Retention Factor. What does the retention factor tell you?
Can someone help with the 4 POST LAB questions thanks Carboxylic Acids and Esters acid). like...
Can someone help with the 4 POST LAB questions thanks
Carboxylic Acids and Esters acid). like citric acid. Face crearboxyl the name implies, a Carbexylic Aclds A salad dressing made of The sour taste of fruits such as lemons is due to the presence of acids like citric acid. tcarboxyl a-hydroxy acids such functional group - that is, a carbonyl group attached to a hydroxyl group. AS dicarboxylic acid carboxylic acid of benzene is called benzoic acid (Figure 1). oil...
Hello, can you help me place the following carboxylic acids in the order from strongest acid...
Hello, can you help me place the following carboxylic acids in
the order from strongest acid to weakest acid thank you.
CF,CH,CH,COOH CF,CH,COOH CF,CH, CH,CH,COOH a. F COOH -COOH COOH F F b. -COOH -COOH c.
Explain how the tri-carboxylic acid cycle connects the metabolism of carbohydrates, amino acids and lipids.
Explain how the tri-carboxylic acid cycle connects the metabolism of carbohydrates, amino acids and lipids.
Acid hydrolysis of amides one of the most used methods in the synthetic transformation of amides to carboxylic acids...
Acid hydrolysis of amides one of the most used methods in the synthetic transformation of amides to carboxylic acids. Provide a stepwise mechanism of the transformation below H20, Ht NH2 OH
Which one of the following carboxylic acids would you expect to be the strongest acid? FHC....
Which one of the following carboxylic acids would you expect to be the strongest acid? FHC. COH COZH сон OA 7 OB2 Oc3
CAN SOMONE PLEASE HELP. above is a picture of two TLC plates with spots on them....
CAN SOMONE PLEASE HELP. above is a picture of two TLC plates
with spots on them. could somone PLEASE PLEASE PLEASE help me get
their measurmentS (in milimeters) and help me calculate their Rf
values!!! I promise to rate u good if you could help!!! Im so
confused!!! THANK U SM
-solvent front scluent front Acetaminophen (A Afine (caf) Unknown mixture Phenacetin (Phn) Salicyamide (sal) Plate 2 Untuan unknown ixture mixture duplicate spots Plate 1 ASSIGNMENT In this experiment, TLC...
9. Carboxylic acids often produce a streak rather than a spot when analyzed on silica gel TLC plates. Adding a drop or two of acetic acid to the eluant reduces streaking. Explain why carboxylic acids may streak on silica gel TLC plates and why adding acetic acid to the eluent reduces streaking. Amines also often streak on silica gel TLC. What might you add to the elu- ant to reduce such streaking? a. b.
Can someone help with the 4 POST LAB questions thanks
Carboxylic Acids and Esters acid). like citric acid. Face crearboxyl the name implies, a Carbexylic Aclds A salad dressing made of The sour taste of fruits such as lemons is due to the presence of acids like citric acid. tcarboxyl a-hydroxy acids such functional group - that is, a carbonyl group attached to a hydroxyl group. AS dicarboxylic acid carboxylic acid of benzene is called benzoic acid (Figure 1). oil...
Hello, can you help me place the following carboxylic acids in
the order from strongest acid to weakest acid thank you.
CF,CH,CH,COOH CF,CH,COOH CF,CH, CH,CH,COOH a. F COOH -COOH COOH F F b. -COOH -COOH c.
Acid hydrolysis of amides one of the most used methods in the synthetic transformation of amides to carboxylic acids. Provide a stepwise mechanism of the transformation below H20, Ht NH2 OH
Which one of the following carboxylic acids would you expect to be the strongest acid? FHC. COH COZH сон OA 7 OB2 Oc3
CAN SOMONE PLEASE HELP. above is a picture of two TLC plates
with spots on them. could somone PLEASE PLEASE PLEASE help me get
their measurmentS (in milimeters) and help me calculate their Rf
values!!! I promise to rate u good if you could help!!! Im so
confused!!! THANK U SM
-solvent front scluent front Acetaminophen (A Afine (caf) Unknown mixture Phenacetin (Phn) Salicyamide (sal) Plate 2 Untuan unknown ixture mixture duplicate spots Plate 1 ASSIGNMENT In this experiment, TLC...
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