Homework Answers
What are the major components of a solution after acid-base equilibriums have established themselves if 5...
What are the major components of a solution after acid-base
equilibriums have established themselves if 5 mol of hydrochloric
acid is added to a solution of 1 mol A and 10 mol B shown below?
Show reaction equations with curved arrows. Indicate lone pairs and
formal charges for all atoms in the reactants and products. Explain
your answer by showing appropriate pKa-values of
functional groups potentially involved in transformations.
NH HMH + HCl A CC OB 2
A solution of two mol of sulfuric acid in 50 mol of water is mixed with...
A solution of two mol of sulfuric acid in 50 mol of water is mixed with 1 mol each of the compounds shown below. Please draw the reaction equations (including curved arrows) for two thermodynamically favorable (exergonic) acid-base transformations that will occur. Which of your two reactions is most exergonic? Please explain. (Tip: you will have to use the pka values given on page 3. A strong base has a weak conjugated acid!) Na Na Cl
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
with one another? no loan pais 1. For each compound shown below, number the illustrated protons...
with one another? no loan pais 1. For each compound shown below, number the illustrated protons according to their acidity: most acidic (1) to least acidic (3). (9 points) H H NH2 H OH HO F F OH O HS OH 13. Shown below is the formal structure of the amino acid methionine and its structure as it exists at physiological pH ( 7.3). In each case, the molecule itself is neutral; however at pH 7.3 there is an atom...
please help with these questions, thank you 1. (1 pts) The order of acidity is SH...
please help with these questions, thank you
1. (1 pts) The order of acidity is SH SH SH SH SH II ш IV 2. (10 pts) For the following reaction the pKa for the acid is 5.7 and the pKa for the conjugate acid is 12.5 н Н + + A D pКа %3.7 pКa %3D2.3 A. Draw the products of the reaction above the spaces B Draw mechanism arrows to complete the reaction C. Using the spaces provided label...
2. Complete the following acid/base equation, filling in all missing details: missing lone pairs, curved arrows...
2. Complete the following acid/base equation, filling in all missing details: missing lone pairs, curved arrows to show electron move and proper formal charge. If there are any resonance structures draw them as well One acid has a pka of 5 and the other acid has a pKa of 15. Match each pka with the proper acid (write it under the acid). Which side is favored and why? Calculate an equilibrium constant (Kog) for the reaction.
2. Complete the following for each reaction: A Draw the full mechanisms for the reactions, providing all curved arrows...
2. Complete the following for each reaction: A Draw the full mechanisms for the reactions, providing all curved arrows and all products of the reactions with all appropriate charges. Draw in bonds between the most acidic proton and the atom it is bonded to if needed. Also draw in lone pairs where appropriate. B. Label the acid, base, conjugate acid, conjugate base, and any spectator ion (if present). C. Indicate which side of the reaction would be favored (reactants or...
Phosphoric acid (structure shown below) is a common acid used in buffer solutions. Even though the...
Phosphoric acid (structure shown below) is a common acid used in
buffer solutions. Even though the structure shows three equivalent
hydrogen atoms, there are three different pKa values associated
with the compound (pKa1 ≈ 2, pKa2 ≈ 7, pKa3 ≈ 12). Why do the three
hydrogen atoms have different pKa values? How many of the hydrogen
atoms will be removed in a buffer solution at pH 4?
OH HO-P-OH
a,b and c please 2. Molecular Structure (a) (5 points) Circle the compound with the highest...
a,b
and c please
2. Molecular Structure (a) (5 points) Circle the compound with the highest boiling point and draw a box around the compound with the lowest boiling point OH Br (b) (5 points) The fictional molecule below has several charged atoms. All lone pair electrons and bonds to hydrogens are explicitly shown. Add circled formal charges to all appropriate atoms. (the double bonded oxygen should have just one lone pair) :ОНн Нн Н н н NH3 н Н...
Need number 2 and number 4 a and b answered The following compounds are drawn in...
Need number 2 and number 4 a and b answered
The following compounds are drawn in their acidic forms, and their pK, values are given. Draw the form in which each compound will predominate in a solution with pH 8. CH COOH pka 4.8 CH CH2OH pKa = 15.9 CH OH pKa =-2.5 CH,CH2NH pka 11.2 a. What is the conjugate base of NH? A b. What is the conjugate base of H 0? c. What is the conjugate acid...
What are the major components of a solution after acid-base
equilibriums have established themselves if 5 mol of hydrochloric
acid is added to a solution of 1 mol A and 10 mol B shown below?
Show reaction equations with curved arrows. Indicate lone pairs and
formal charges for all atoms in the reactants and products. Explain
your answer by showing appropriate pKa-values of
functional groups potentially involved in transformations.
NH HMH + HCl A CC OB 2
A solution of two mol of sulfuric acid in 50 mol of water is mixed with 1 mol each of the compounds shown below. Please draw the reaction equations (including curved arrows) for two thermodynamically favorable (exergonic) acid-base transformations that will occur. Which of your two reactions is most exergonic? Please explain. (Tip: you will have to use the pka values given on page 3. A strong base has a weak conjugated acid!) Na Na Cl
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
with one another? no loan pais 1. For each compound shown below, number the illustrated protons according to their acidity: most acidic (1) to least acidic (3). (9 points) H H NH2 H OH HO F F OH O HS OH 13. Shown below is the formal structure of the amino acid methionine and its structure as it exists at physiological pH ( 7.3). In each case, the molecule itself is neutral; however at pH 7.3 there is an atom...
please help with these questions, thank you
1. (1 pts) The order of acidity is SH SH SH SH SH II ш IV 2. (10 pts) For the following reaction the pKa for the acid is 5.7 and the pKa for the conjugate acid is 12.5 н Н + + A D pКа %3.7 pКa %3D2.3 A. Draw the products of the reaction above the spaces B Draw mechanism arrows to complete the reaction C. Using the spaces provided label...
2. Complete the following acid/base equation, filling in all missing details: missing lone pairs, curved arrows to show electron move and proper formal charge. If there are any resonance structures draw them as well One acid has a pka of 5 and the other acid has a pKa of 15. Match each pka with the proper acid (write it under the acid). Which side is favored and why? Calculate an equilibrium constant (Kog) for the reaction.
2. Complete the following for each reaction: A Draw the full mechanisms for the reactions, providing all curved arrows and all products of the reactions with all appropriate charges. Draw in bonds between the most acidic proton and the atom it is bonded to if needed. Also draw in lone pairs where appropriate. B. Label the acid, base, conjugate acid, conjugate base, and any spectator ion (if present). C. Indicate which side of the reaction would be favored (reactants or...
Phosphoric acid (structure shown below) is a common acid used in
buffer solutions. Even though the structure shows three equivalent
hydrogen atoms, there are three different pKa values associated
with the compound (pKa1 ≈ 2, pKa2 ≈ 7, pKa3 ≈ 12). Why do the three
hydrogen atoms have different pKa values? How many of the hydrogen
atoms will be removed in a buffer solution at pH 4?
OH HO-P-OH
a,b
and c please
2. Molecular Structure (a) (5 points) Circle the compound with the highest boiling point and draw a box around the compound with the lowest boiling point OH Br (b) (5 points) The fictional molecule below has several charged atoms. All lone pair electrons and bonds to hydrogens are explicitly shown. Add circled formal charges to all appropriate atoms. (the double bonded oxygen should have just one lone pair) :ОНн Нн Н н н NH3 н Н...
Need number 2 and number 4 a and b answered
The following compounds are drawn in their acidic forms, and their pK, values are given. Draw the form in which each compound will predominate in a solution with pH 8. CH COOH pka 4.8 CH CH2OH pKa = 15.9 CH OH pKa =-2.5 CH,CH2NH pka 11.2 a. What is the conjugate base of NH? A b. What is the conjugate base of H 0? c. What is the conjugate acid...
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