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a) For most enzymes, the Km is closely related to the affinity of the enzyme for...
a) For most enzymes, the Km is closely related to the affinity of the enzyme for its substrate(s). Which has higher affinity, an enzyme with a low Km, or an enzyme with a high Km? Justify your answer. b) True or false: at a pH equal to its pKA, the average charge on an ionizable amino acid sidechain (such as lysine's ε-amino group) will be zero. c) Titration of isoleucine by a strong base, for example NaOH, reveals two pK’s....
5. Amino acid titration. The graph below shows a titration of an amino acid with NaOH....
5. Amino acid titration. The graph below shows a titration of an amino acid with NaOH. This experiment reveals several important features of this amino acid. A) What is the identity of the amino acid? [Write its full name.] B) Match the following points in the titration curve. [In the space beside each description (left), write a number (1-6) corresponding to a specific pH (right).] The amino acid is fully protonated. 1) pH=0.0 PH The amino acid is fully deprotonated....
I'm not sure about how I'm supposed to find NaOH concentration from a strong acid and...
I'm not sure about how I'm supposed to find NaOH
concentration from a strong acid and strong base titration. I'm
thinking that 2.5×10^-8 mol per L that I calculated would make the
moles of NaOH 2.5x10^-8 mol since it's a one to one
ratio.
Hydrochloric acid titration: Confirming the concentration of NaOH Concentration of HCl solution from the stock bottle: _ 0.OSM! Initial pH of HCl solution: 1.66 pH Volume NaOH (mL) Concentration of NaOH (M) Non Phenolphthalein (end point)...
I'm not sure If i have the right answer can someone help? CH3COOH ANADH -> HO...
I'm not sure If i have the right answer can someone
help?
CH3COOH ANADH -> HO CH3COO- a. For a weak acid (e.g., CH3COOH) that is titrated with a strong base (e.g., NaOH). what species (ions/molecules) are present in the solution at the stoichiometric point? At the stochiometric point Nat and CH3COO- will be presenti b. For a weak acid (e.g., CH3COOH) that is titrated with a strong base (e.g., NaOH), what species (ions/molecules) are present in the solution at...
I need help with questions 1,3,4,5 1.0.15 M ammonium chloride is added to a 0.05 M...
I need help with questions 1,3,4,5
1.0.15 M ammonium chloride is added to a 0.05 M solution of ammonia. How does the pH change? NHs(aq) + H2O(1) NH(aq) + OH(aq) A. pH goes up B. pH goes down C. pH does not change 2. Which of the following would make buffer system? A. a weak asid and NaCl B. a weak acident's conjugate base C. a strong acid and a weak acid D. alveak acid and a strong acid E....
Name, Three-letter Symbol, and One-letter Symbol Structural Formula Residue Mass (D)6 Average Occurrence in Proteins (%)...
Name, Three-letter Symbol, and One-letter Symbol Structural Formula Residue Mass (D)6 Average Occurrence in Proteins (%) рк, C-COOH рк, Q-NH3+d Valine ÇOOCH3 99.1 6.9 2.29 9.74 Val H-C-CH. NH; CH3 a. Sketch the curve for the titration of valine with NaOH. You should begin with the fully protonated form of valine. Clearly label axes and the locations of pKas on the figure. (8 pts) b. Draw the predominate form of valine at pH 12.5. (2 pts) c. Over what pH...
1. The following pictures represent solution at various points in the titration of a weak acid...
1. The following pictures represent solution at various points in the titration of a weak acid with a strong base. HA + OH - HOH + A OH - -OH Which picture to the left corresponds to cach of the following points in the titration? before the addition of any NaOH at the equivalence point where only a salt remains which solution is a buffer? Multiple Choice 1. Barium hydroxide is slightly soluble in water, with a Kap of 5.00...
I added everything thing. this is the lab question you need to solve. First assigned buffer...
I added everything thing.
this is the lab question you need to solve.
First assigned buffer pH: 2.031 Second assigned buffer pH: 9.171 Available Buffer Systems (acid/ base) pka of Conjugate Acid 2.847 4.757 malonic acid/ monosodium malonate acetic acid/ sodium acetate ammonium chloride/ ammonia triethylammonium chloride/ triethylamine 9.244 10.715 1) Buffer system details: Given pH Name and volume conjugate acid Name and volume conjugate base 2) Calculations for preparation of high capacity buffer system. Introduction In this experiment, you...
As for the circled answer I'm not sure if that's the correct one so please explain how we get the answer. Thanks in adv...
As for the circled answer I'm not sure if that's the correct one so
please explain how we get the answer. Thanks in advance!
Calculate the pH of 0.10M solutions of the following Substances. Based on your calculations, Circle the solution that is the most basic? a) (CoHs NH3) No3 6) Na CC + HBO₂) c) NaNO3 pH- Adid lodic acid Comous acid Cute and Niusad Hydrofluoriid Formic acid Bad Hydraznic acid Acetic acid Hypochlorous acid Hydrocyanic acid но HCO,...
If the Ka for HCIO, is 1,0x10, what is the Kb of CIO:? A. 1.0x1014 B....
If the Ka for HCIO, is 1,0x10, what is the Kb of CIO:? A. 1.0x1014 B. 1.0x10 C. 1.0x1015 D. 1.0x10 2 Choose the list which, based on structure, puts the acids in the order of most acidic to least acidic. A. HF> HCI> HBr> III B. CCla-COOII> CCbl-COOI> CCIH-COOH> CH-coOfI C. 1ICIO>HCIO,> HCIO3> HCIO4 D. B(OH),> NII> H2O > HF Which of the following substances will produce a basic solution? A. MgCl B. Fe(NO) C. KI D. NaF 4....
5. Amino acid titration. The graph below shows a titration of an amino acid with NaOH. This experiment reveals several important features of this amino acid. A) What is the identity of the amino acid? [Write its full name.] B) Match the following points in the titration curve. [In the space beside each description (left), write a number (1-6) corresponding to a specific pH (right).] The amino acid is fully protonated. 1) pH=0.0 PH The amino acid is fully deprotonated....
I'm not sure about how I'm supposed to find NaOH
concentration from a strong acid and strong base titration. I'm
thinking that 2.5×10^-8 mol per L that I calculated would make the
moles of NaOH 2.5x10^-8 mol since it's a one to one
ratio.
Hydrochloric acid titration: Confirming the concentration of NaOH Concentration of HCl solution from the stock bottle: _ 0.OSM! Initial pH of HCl solution: 1.66 pH Volume NaOH (mL) Concentration of NaOH (M) Non Phenolphthalein (end point)...
I'm not sure If i have the right answer can someone
help?
CH3COOH ANADH -> HO CH3COO- a. For a weak acid (e.g., CH3COOH) that is titrated with a strong base (e.g., NaOH). what species (ions/molecules) are present in the solution at the stoichiometric point? At the stochiometric point Nat and CH3COO- will be presenti b. For a weak acid (e.g., CH3COOH) that is titrated with a strong base (e.g., NaOH), what species (ions/molecules) are present in the solution at...
I need help with questions 1,3,4,5
1.0.15 M ammonium chloride is added to a 0.05 M solution of ammonia. How does the pH change? NHs(aq) + H2O(1) NH(aq) + OH(aq) A. pH goes up B. pH goes down C. pH does not change 2. Which of the following would make buffer system? A. a weak asid and NaCl B. a weak acident's conjugate base C. a strong acid and a weak acid D. alveak acid and a strong acid E....
Name, Three-letter Symbol, and One-letter Symbol Structural Formula Residue Mass (D)6 Average Occurrence in Proteins (%) рк, C-COOH рк, Q-NH3+d Valine ÇOOCH3 99.1 6.9 2.29 9.74 Val H-C-CH. NH; CH3 a. Sketch the curve for the titration of valine with NaOH. You should begin with the fully protonated form of valine. Clearly label axes and the locations of pKas on the figure. (8 pts) b. Draw the predominate form of valine at pH 12.5. (2 pts) c. Over what pH...
1. The following pictures represent solution at various points in the titration of a weak acid with a strong base. HA + OH - HOH + A OH - -OH Which picture to the left corresponds to cach of the following points in the titration? before the addition of any NaOH at the equivalence point where only a salt remains which solution is a buffer? Multiple Choice 1. Barium hydroxide is slightly soluble in water, with a Kap of 5.00...
I added everything thing.
this is the lab question you need to solve.
First assigned buffer pH: 2.031 Second assigned buffer pH: 9.171 Available Buffer Systems (acid/ base) pka of Conjugate Acid 2.847 4.757 malonic acid/ monosodium malonate acetic acid/ sodium acetate ammonium chloride/ ammonia triethylammonium chloride/ triethylamine 9.244 10.715 1) Buffer system details: Given pH Name and volume conjugate acid Name and volume conjugate base 2) Calculations for preparation of high capacity buffer system. Introduction In this experiment, you...
As for the circled answer I'm not sure if that's the correct one so
please explain how we get the answer. Thanks in advance!
Calculate the pH of 0.10M solutions of the following Substances. Based on your calculations, Circle the solution that is the most basic? a) (CoHs NH3) No3 6) Na CC + HBO₂) c) NaNO3 pH- Adid lodic acid Comous acid Cute and Niusad Hydrofluoriid Formic acid Bad Hydraznic acid Acetic acid Hypochlorous acid Hydrocyanic acid но HCO,...
If the Ka for HCIO, is 1,0x10, what is the Kb of CIO:? A. 1.0x1014 B. 1.0x10 C. 1.0x1015 D. 1.0x10 2 Choose the list which, based on structure, puts the acids in the order of most acidic to least acidic. A. HF> HCI> HBr> III B. CCla-COOII> CCbl-COOI> CCIH-COOH> CH-coOfI C. 1ICIO>HCIO,> HCIO3> HCIO4 D. B(OH),> NII> H2O > HF Which of the following substances will produce a basic solution? A. MgCl B. Fe(NO) C. KI D. NaF 4....
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