1. Nile Blue in acid solution is a protonated imine with a pKa 10.1. Most protonated...
1. Nile Blue in acid solution is a protonated imine with a pKa 10.1. Most protonated imines have pKa values of 7-8. raw structures for the conjugate acid of nile blue and use them to explain why it is less acidic than a typical imine.
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1. Nile Blue in acid solution is a protonated imine with a pKa
10.1. Most protonated...
please help :( to the separatory funnel and shake a rate the layers (Step 3), Return...
please help :(
to the separatory funnel and shake a rate the layers (Step 3), Return the mu we aqueous layer with 10 ml of dichloromethane observations in your laboratory notebook dichloromethane layers and return the ane layers and return them to the separatory funne With 10 mL of IM NaOH (Step 8). Describe w OF IM NaOH (Step 8). Describe what happened in yo . Separate the layers (Step 9) and extract the organ e times (Steps 10 -...
1. 2,6-dichloroindophenol has a pKa value of 5.9 and is 10,000 times more acidic than phenol...
1. 2,6-dichloroindophenol has a pKa value of 5.9 and is 10,000 times more acidic than phenol (pKa = 10). Draw resonance structures for the conjugate base of 2,6-dichloroindophenol and use them to explain the differences in pKa values.
6. Usina resonance structures, explain why acetaldenyde has a pka of 17, while acetone of 19. 7. Using resonance st...
6. Usina resonance structures, explain why acetaldenyde has a pka of 17, while acetone of 19. 7. Using resonance structures, explain why methyl acetate (pka 25) is less acidic than acetone (pka 19). 8. Rank the following in order from least to most acidic. Explain your ranking, using resonance structures with your explanation. & la
OH pka 3.1 pKa 4.5 HO -OH pka 5.8 depicts the structure of citric acid with the corresponding pka values for each o...
OH pka 3.1 pKa 4.5 HO -OH pka 5.8 depicts the structure of citric acid with the corresponding pka values for each of the three acids. a. Explain why the carboxylic acid at the top of the structure is the most acidic. b. Suggest a reason why the remaining two acids would have different pka values.
Please Explain: 7) a. Why does an acid and its conjugate base have the same pKa...
Please Explain: 7) a. Why does an acid and its conjugate base have the same pKa and Ka values? b. Why does a base and its conjugate acid have the same pKa and Ka values? Thank You! <3
2. A structure of Luminol is shown with all functional groups protonated and their pka labeled....
2. A structure of Luminol is shown with all functional groups protonated and their pka labeled. Use words and structures to answer a and b. Luminol pke 2 9 a. Acetic acid was added at the end of the reduction step to obtain a pH of - 3-4.2pts i. Draw the structure of the luminol at pH 3. ii. Refering to the structure in a.i.), explain why the luminol precipitates from the aqueous solution at this pH. NH₂ NH N-H...
1. 2. Write an equation that describes what happens when benzoic acid (a solid) dissolves in...
1. 2. Write an equation that describes what happens when benzoic acid (a solid) dissolves in water. Now write an equation that describes benzoic acid dissolving in diethyl ether (a liquid). (Hint: replace the (aq) phase symbol with (ether).) Write equations including pKa values that describes the following reactions: a. Acetic acid with aqueous NaOH. b. Ethyl amine with aqueous HCI. c. Phenol with aqueous NaOH. 2,6-dichloroindophenol (see in Part III) has a pKa value of 5.9 and is 10,000...
Biochemistry 4. The ionization of p-nitrophenol is shown below (pKa = 7.0): NO2 он weak acid...
Biochemistry
4. The ionization of p-nitrophenol is shown below (pKa = 7.0): NO2 он weak acid conjugate base a. (4 points) Identify the weak acid and conjugate base. b. (4 points)At pH 7, what are the relative concentrations of ionized and un-ionized p- nitrophenol? c. (4 points)If enough concentrated hydrochloric acid is added to a solution of p-nitrophenol to lower the pH from 7 to 5, what will happen to the relative concentrations of the ionized and un-ionized forms? d....
A solution of three mol hydrochloric acid (pKa-5) in 50 mol of water is mixed with...
A solution of three mol hydrochloric acid (pKa-5) in 50 mol of water is mixed with 1 mol each of the compounds shown below. Please draw reaction equations (including curved arrows) for the acid-base transformations that occur with each of the reagents Which of your reactions is most exergonic (i.e. energetically most preferred? Please explain. (Tip: you will have to use the pka values given on page 3. A strong base has a weak conjugated acid!) Na O Na
Electrogravimetric determination of Copper: 1. Why the sample solution is blue colored? Why do the electrodes have t...
Electrogravimetric determination of Copper: 1. Why the sample solution is blue colored? Why do the electrodes have to be as close as possible? 2. Using your textbook explain why does the experiment take so long? 3. Identify three factors that influence the physical characteristics of an electrolytic deposit. 4. What where the acids used in the acidic digestion? Why the experiment requires a mixture of acids? rather than a single one? 5. Why is important to avoid mixing acetone with...
please help :(
to the separatory funnel and shake a rate the layers (Step 3), Return the mu we aqueous layer with 10 ml of dichloromethane observations in your laboratory notebook dichloromethane layers and return the ane layers and return them to the separatory funne With 10 mL of IM NaOH (Step 8). Describe w OF IM NaOH (Step 8). Describe what happened in yo . Separate the layers (Step 9) and extract the organ e times (Steps 10 -...
6. Usina resonance structures, explain why acetaldenyde has a pka of 17, while acetone of 19. 7. Using resonance structures, explain why methyl acetate (pka 25) is less acidic than acetone (pka 19). 8. Rank the following in order from least to most acidic. Explain your ranking, using resonance structures with your explanation. & la
OH pka 3.1 pKa 4.5 HO -OH pka 5.8 depicts the structure of citric acid with the corresponding pka values for each of the three acids. a. Explain why the carboxylic acid at the top of the structure is the most acidic. b. Suggest a reason why the remaining two acids would have different pka values.
2. A structure of Luminol is shown with all functional groups protonated and their pka labeled. Use words and structures to answer a and b. Luminol pke 2 9 a. Acetic acid was added at the end of the reduction step to obtain a pH of - 3-4.2pts i. Draw the structure of the luminol at pH 3. ii. Refering to the structure in a.i.), explain why the luminol precipitates from the aqueous solution at this pH. NH₂ NH N-H...
1. 2. Write an equation that describes what happens when benzoic acid (a solid) dissolves in water. Now write an equation that describes benzoic acid dissolving in diethyl ether (a liquid). (Hint: replace the (aq) phase symbol with (ether).) Write equations including pKa values that describes the following reactions: a. Acetic acid with aqueous NaOH. b. Ethyl amine with aqueous HCI. c. Phenol with aqueous NaOH. 2,6-dichloroindophenol (see in Part III) has a pKa value of 5.9 and is 10,000...
Biochemistry
4. The ionization of p-nitrophenol is shown below (pKa = 7.0): NO2 он weak acid conjugate base a. (4 points) Identify the weak acid and conjugate base. b. (4 points)At pH 7, what are the relative concentrations of ionized and un-ionized p- nitrophenol? c. (4 points)If enough concentrated hydrochloric acid is added to a solution of p-nitrophenol to lower the pH from 7 to 5, what will happen to the relative concentrations of the ionized and un-ionized forms? d....
A solution of three mol hydrochloric acid (pKa-5) in 50 mol of water is mixed with 1 mol each of the compounds shown below. Please draw reaction equations (including curved arrows) for the acid-base transformations that occur with each of the reagents Which of your reactions is most exergonic (i.e. energetically most preferred? Please explain. (Tip: you will have to use the pka values given on page 3. A strong base has a weak conjugated acid!) Na O Na
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