Lactic acid is a simple organic acid that is somewhat stronger than acetic acid. The lactate...
Lactic acid is a simple organic acid that is somewhat stronger than acetic acid. The lactate ion is the conjugate base of lactic acid and is one product of animal (including human) metabolism. Ka for lactic acid is 1.38 x 10-4.
- If the resting amount of lactate in blood is 2.0 mM and typical blood pH is 7.40, what is the lactic acid concentration in blood?
- Calculate the pH of a 0.0100 M solution of lactic acid.
- Calculate the pH of a 0.0100 M solution of sodium lactate.
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Lactic acid is a simple organic acid that is somewhat stronger
than acetic acid. The lactate...
Lactic acid, HC3H5O3, is a substance found in sour milk products such as yogurt, and is...
Lactic acid, HC3H5O3, is a substance found in sour milk products such as yogurt, and is produced naturally by fermentation in body cells during normal metabolism and exercise The Ka for lactic acid is 38 x 10-4. Its sodium salt, sodium lactate, NaC3H5O3, is used in foods as a preservative and acidity regulator. It is also used in shampoo products as an effective humectant and moisturizer. Determine the pH of a solution prepared by adding 4.5 grams of sodium lactate...
Lactic acid, HC3H5O3, is a substance found in sour milk products such as yogurt, and is...
Lactic acid, HC3H5O3, is a substance found in sour milk products such as yogurt, and is produced naturally by fermentation in body cells during normal metabolism and exercise The Ka for lactic acid is 38 x 10-4. Its sodium salt, sodium lactate, NaC3H5O3, is used in foods as a preservative and acidity regulator. It is also used in shampoo products as an effective humectant and moisturizer. Determine the pH of a solution prepared by adding 4.5 grams of sodium lactate...
What is the pH of a buffer that is 0.12 M in lactic acid (HC3H503) and 0.10 m in sodium lactate? For lactic acid, K...
What is the pH of a buffer that is 0.12 M in lactic acid (HC3H503) and 0.10 m in sodium lactate? For lactic acid, Ka= 1.4x10-4 a 3.77 6.3.85 OC 10.33 d. 1.20
A lactic acid/lactate ion buffer solution contains 0.43 MHC3H5 03 and 0.80 MC,H50,-, respectively. The Ka...
A lactic acid/lactate ion buffer solution contains 0.43 MHC3H5 03 and 0.80 MC,H50,-, respectively. The Ka value of lactic acid is 1.4 × 10-4. Calculate the pH of this buffer. Express the pH numerically.
1) Calculate the pH of the 1L buffer composed of 500 mL of 0.60 M acetic...
1) Calculate the pH of the 1L buffer composed of 500 mL of 0.60 M acetic acid plus 500 mL of 0.60 M sodium acetate, after 0.010 mol of HCl is added (Ka HC2H3O2 = 1.75 x 10-5). Report your answer to the hundredths place. 2) Calculate the pH of the 1L buffer composed of 500 mL 0.60 M acetic acid plus 500 mL of 0.60 M sodium acetate, after 0.010 mol of NaOH is added (Ka HC2H3O2 = 1.75...
Calculate the pH of a buffer solution prepared by mixing 75 mL of 1.0 M lactic...
Calculate the pH of a buffer solution prepared by mixing 75 mL of 1.0 M lactic acid and 25 mL of a 1.0M sodium lactate. (pka of lactic acid = 3.86) Calculate the change in pH that occurs when 0.01moles of OH are added to a 1L buffered solution that contains 0.5M acetic acid (HC_2H_3O_2) and 0.5M acetate ion (C_2H_3O_2). Acetic acid pka = 4.76.
QUESTION 12 Refer to the table below to answer the next two questions: Weak Acid Acetic...
QUESTION 12 Refer to the table below to answer the next two questions: Weak Acid Acetic acid Lactic acid Citric acid Ascorbic acid Pyruvic acid Oxalic acid Ka 1.74 x 10-5 M 1.38 x 10-5 M 7.08 x 10-4 M 6.76 x 10-5 M 4.08 x 10-3 M 5.37 x 10-2 M Which of the following is a stronger weak acid than pyruvic acid? Acetic acid Ascorbic acid Oxalic acid O Citric acid Lactic acid QUESTION 13 What is the...
1. Calculate the pKa of lactic acid, given that when the concentration of lactic acid is...
1. Calculate the pKa of lactic acid, given that when the concentration of lactic acid is 0.010 M and the concentration of lactate is 0.087 M, the pH is 4.80 B. Calculate the ratio of the concentrations of acetate and acetic acid required in a buffer system of pH 5.30 C The pH of a 0.20 M sodium acetate buffer is 5.1. The pKa of acetic acid is 4.76. Explain in details (showing all calculation) how to prepare the buffer...
A buffer contains 0.020 mol of lactic acid (pKa = 3.86) and 0.100 mol sodium lactate...
A buffer contains 0.020 mol of lactic acid (pKa = 3.86) and 0.100 mol sodium lactate per liter of aqueous solution. a. Calculate the pH of this buffer. b. Calculate the pH after 8.0 mL of 1.00 M NaOH is added to 1 liter of the buffer (assume the total volume will be 1008 mL).
A buffer is prepared by adding 0.15 mol of lactic acid, CH3CHOHCOOH, and 0.20 mol of...
A buffer is prepared by adding 0.15 mol of lactic acid, CH3CHOHCOOH, and 0.20 mol of sodium lactate, Na+CH3CHOHCOO - , to sufficient water to make 1.0 L of buffer solution. The Ka of lactic acid is 1.4 x 10 - 4. Calculate the pH of the buffer.
What is the pH of a buffer that is 0.12 M in lactic acid (HC3H503) and 0.10 m in sodium lactate? For lactic acid, Ka= 1.4x10-4 a 3.77 6.3.85 OC 10.33 d. 1.20
A lactic acid/lactate ion buffer solution contains 0.43 MHC3H5 03 and 0.80 MC,H50,-, respectively. The Ka value of lactic acid is 1.4 × 10-4. Calculate the pH of this buffer. Express the pH numerically.
Calculate the pH of a buffer solution prepared by mixing 75 mL of 1.0 M lactic acid and 25 mL of a 1.0M sodium lactate. (pka of lactic acid = 3.86) Calculate the change in pH that occurs when 0.01moles of OH are added to a 1L buffered solution that contains 0.5M acetic acid (HC_2H_3O_2) and 0.5M acetate ion (C_2H_3O_2). Acetic acid pka = 4.76.
QUESTION 12 Refer to the table below to answer the next two questions: Weak Acid Acetic acid Lactic acid Citric acid Ascorbic acid Pyruvic acid Oxalic acid Ka 1.74 x 10-5 M 1.38 x 10-5 M 7.08 x 10-4 M 6.76 x 10-5 M 4.08 x 10-3 M 5.37 x 10-2 M Which of the following is a stronger weak acid than pyruvic acid? Acetic acid Ascorbic acid Oxalic acid O Citric acid Lactic acid QUESTION 13 What is the...
1. Calculate the pKa of lactic acid, given that when the concentration of lactic acid is 0.010 M and the concentration of lactate is 0.087 M, the pH is 4.80 B. Calculate the ratio of the concentrations of acetate and acetic acid required in a buffer system of pH 5.30 C The pH of a 0.20 M sodium acetate buffer is 5.1. The pKa of acetic acid is 4.76. Explain in details (showing all calculation) how to prepare the buffer...
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