Lactic acid, C3H6O3 occurs in sour milk as a result on metabolism of certain bacteria.. What...
Lactic acid, C3H6O3 occurs in sour milk as a result on metabolism of certain bacteria.. What is the pH of a solution of 156 mg of lactic acid in 250 mL water? The Ka of lactic acid is 1.4 x 10-4. This problem is broken into steps over the next couple of problems.
part 1. What is the initial concentration of lactic acid?
part 2. What is the value of H3O+ concentration?
part 3. What is the pH?
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Lactic acid, C3H6O3 occurs in sour milk as a result on
metabolism of certain bacteria.. What...
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...
12. Lactic acid (HC3H5O3) is present in sour milk It is a monoprotic acid. In a...
12. Lactic acid (HC3H5O3) is present in sour milk It is a monoprotic acid. In a 0.100 M solution of lactic acid, the pH is 2.44 at 25°C. Calculate Ka and pKa for lactic acid at that temperature. (10)
4. (10 pts) Lactic acid C3H603 is found in sour milk where it is produced by...
4. (10 pts) Lactic acid C3H603 is found in sour milk where it is produced by the action of lactobacilli in lactose or the sugar in milk. The pH of a 0.045 M solution of lactic acid was determined using a pH probe and found to be 2.63. a. Calculate the equilibrium constant for this acid. b. Had you not been given the pH of the acid and you had to measure it yourself, how would the method in part...
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 CH3CHOHCOOH is found in sour milk, in sauerkraut, and in muscles after activity. Lactic...
Lactic acid CH3CHOHCOOH is found in sour milk, in sauerkraut, and in muscles after activity. Lactic acid is a weak monoprotic acid in aqueous solution, with a Ka = 1.4x10^-4 at 25 degree. 2.15g of sodium hydroxide was added to 8.00x10^2 mL of an aqueous solution containing 0.100mol/L lactic acid. a) Determine the pH of the resulting solution b)determine the concentrations of all neutral acid ionic species (other than water) present in the resulting solution
-. (10 pts) Lactic acid C3H603 is found in sour milk where it is produced by the action of lactobacilli in lactos...
-. (10 pts) Lactic acid C3H603 is found in sour milk where it is produced by the action of lactobacilli in lactose or the sugar in milk. The pH of a 0.045 M solution of lacti, acid was determined using a pH probe and found to be 2.63. a. Calculate the equilibrium constant for this acid, b. Had you not been given the pH of the acid and you had to measure it yourself, how would the method in part...
A certain strain of bacteria occurs in all raw milk. Let X be the bacteria count...
A certain strain of bacteria occurs in all raw milk. Let X be the bacteria count per milliliter of milk and has a symmetrical mound shaped distribution. The mean of X is 2500 with a standard deviation is 301. In a large commercial dairy, the health inspector takes 49 random samples of milk produced every day. The sample mean of bacteria us x̄ was found to be 2605. A. what is the distribution of x̄? Explain. What is the mean...
11a) 1.00 moles of lactic acid (HC2H5O3, Ka - 1.4 x 104) and 1.00 moles of...
11a) 1.00 moles of lactic acid (HC2H5O3, Ka - 1.4 x 104) and 1.00 moles of sodium lactate (NaC3H5O3) are dissolved in water resulting in a solution with a final volume of 550 mL. What is the pH of the solution after the addition of 0.080 moles of HCI? a. 0.80 b. 1.8 c. 2.8 d. 3.8 0 0 0 ΓΝ 5 nts 12a) Metacresol is a pH indicator which changes from yellow to purple at pH = 8.2. Which...
The Ka of lactic acid, HC3H5O3, is 1.4 ✕ 10−4. (a) Suppose buffer #1 is prepared using 40.0 mL 0.1 M HC3H5O3 and 60.0 mL...
The Ka of lactic acid, HC3H5O3, is 1.4 ✕ 10−4. (a) Suppose buffer #1 is prepared using 40.0 mL 0.1 M HC3H5O3 and 60.0 mL 0.1 M C3H5O3− to give a final volume of 100.0 mL. What is the pH of this buffer? WebAssign will check your answer for the correct number of significant figures. 4.19 Incorrect: Your answer is incorrect. (b) Suppose a buffer #2 is prepared using 60.0 mL 0.1 M HC3H5O3 and 40.0 mL 0.1 M C3H5O3−...
Tuo UF Weak Acid with Strong Base 5 of 7 > A certain weak acid, HA,...
Tuo UF Weak Acid with Strong Base 5 of 7 > A certain weak acid, HA, with a Ka value of 5.61 x 10 Constants Periodic Table A titration involves adding a reactant of known quantity to a solution of an another reactant while monitoring the equilibrium concentrations. This allows one to determine the concentration of the second reactant. The equation for the reaction of a generic weak acid HA with a strong base is HA(aq) + OH (aq) +...
12. Lactic acid (HC3H5O3) is present in sour milk It is a monoprotic acid. In a 0.100 M solution of lactic acid, the pH is 2.44 at 25°C. Calculate Ka and pKa for lactic acid at that temperature. (10)
4. (10 pts) Lactic acid C3H603 is found in sour milk where it is produced by the action of lactobacilli in lactose or the sugar in milk. The pH of a 0.045 M solution of lactic acid was determined using a pH probe and found to be 2.63. a. Calculate the equilibrium constant for this acid. b. Had you not been given the pH of the acid and you had to measure it yourself, how would the method in part...
-. (10 pts) Lactic acid C3H603 is found in sour milk where it is produced by the action of lactobacilli in lactose or the sugar in milk. The pH of a 0.045 M solution of lacti, acid was determined using a pH probe and found to be 2.63. a. Calculate the equilibrium constant for this acid, b. Had you not been given the pH of the acid and you had to measure it yourself, how would the method in part...
11a) 1.00 moles of lactic acid (HC2H5O3, Ka - 1.4 x 104) and 1.00 moles of sodium lactate (NaC3H5O3) are dissolved in water resulting in a solution with a final volume of 550 mL. What is the pH of the solution after the addition of 0.080 moles of HCI? a. 0.80 b. 1.8 c. 2.8 d. 3.8 0 0 0 ΓΝ 5 nts 12a) Metacresol is a pH indicator which changes from yellow to purple at pH = 8.2. Which...
Tuo UF Weak Acid with Strong Base 5 of 7 > A certain weak acid, HA, with a Ka value of 5.61 x 10 Constants Periodic Table A titration involves adding a reactant of known quantity to a solution of an another reactant while monitoring the equilibrium concentrations. This allows one to determine the concentration of the second reactant. The equation for the reaction of a generic weak acid HA with a strong base is HA(aq) + OH (aq) +...
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