The pKa for Bis-Tris buffer is 6.5. What is the concentration of Bis-Tris Base if the pH is 6.9 and the concentration of Tris Acid is 4 mM (4x10-3M)?

Q: Which of the following BEST describes a buffer solution?     The pH of a buffer is close to the…

A: A buffer solution is generally a mixture of a weak acid and its conjugate base or a weak base and…

Q: A buffer is created by adding 0.321 moles of bromoacetic acid (pKa = 2.902) and 0.555 moles of…

A: Given that : Moles of acid (bromoacetic acid) = 0.321 moles Moles of salt (sodium bromoacetate) =…

Q: Calculate the pH of a buffer solution that contains 0.34M benzoic acid and 0.49 M potassium…

A: Using Henderson equation , we can solve this problem. Here benzoic acid is weak acid and potassium…

Q: Liontic acid is a weak acid with a pKa of 7.2. A 400-mL solution of 0.3 M liontate buffer was…

A: Given,pKa of liontic acid = 7.2Molarity of liontate buffer = 0.3 MVolume of buffer solution = 400…

Q: What is the pH of a buffer that is 0.230 M in a weak acid and 0.500 M in the acid’s conjugate base?…

A: Given that,  Pka of  the weak acid = 6.72 The buffer solution contains     Concentration of weak…

Q: What is the pH a buffer solution containing 0.35 M acetic acid and 0.39 M sodium acetate where the…

A: The given buffer solution is a mixture of weak acid acetic acid and its salt  sodium acetate. The pH…

Q: You need to prepare an acetate buffer of pH 5.45 from a 0.654 M acetic acid solution and a 2.53 M…

A: The number of moles of acetic acid (nAcOH) in 480 mL 0.654 M solution is calculated using equation…

Q: A formic acid buffer solution contains 0.18 M HCOOH and 0.13 M HCOO-. The pKa of formic acid is…

A: pH is the negative logarithm of Hydrogen ion concentration, stand for power of Hydrogen ion or…

Q: Using the Henderson-Hasselbach equation predict under which of the following conditions will the pH…

A: A buffer solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate…

Q: The pKa of acetic acid, HC2H3O2, is 4.74. What is the pH of a buffer in which [HC2H3O2] = 0.20 M and…

A: Solution, which resist in pH change value upon addition of small amount of strong acid or base (less…

Q: A buffer solution contains formic acid and a salt solution containing sodium formate. What is the pH…

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Q: You need to prepare an acetate buffer of pH 5.27 from a 0.895 M acetic acid solution and a 2.71 M…

A: Let volume of KOH = V Liter  Molarity of KOH = 2.71 M  So,  Number of moles of KOH = Molarity of KOH…

Q: The acid HD has a pKa of 4.64.  What volume, in mL, of a 0.100 M solution of sodium hydroxide needs…

A: A buffer is a solution which resists any change in pH on adding a small amount of acid or base.It is…

Q: One of the factors that can affect the pH of a buffered solution is the molar ratio of the conjugate…

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Q: You need to prepare an acetate buffer of pH 5.42 from a 0.647 M acetic acid solution and a 2.43 M…

A: A buffer is a solution which resists any change in pH by adding a small amount of acid or base.  It…

Q: What is the pH of a solution containing 0.50 moles of benzoic acid and 0.75 moles of sodium benzoate…

A: moles of benzoic acid = 0.50 molesmoles of sodium benzoate = 0.75 molespKa of benzoic acid = 4.19pH…

Q: Which of the following is true of a buffer solution that contains equivalent amounts of acid and…

A: buffer solution that contains equivalent amounts of acid and conjugate base means [Conjugate base ]…

Q: A formic acid buffer solution contains 0.20 M  HCOOHHCOOH  and 0.25 M  HCOO− . The pKa of formic…

A: Since HCOOH is a weak monoprotic acid. And the pH of monoprotic acid buffer is given by…

Q: You wish to make a buffer of 500 mL at 0.1 M sodium phosphate at pH 6.5. If the molecular weight of…

A: Buffer is a solution that resists the change in its pH when small amount of acid or base is added to…

Q: A student wishes to make a buffer that has a pH of 4.65.  The student has HNO2 and NaNO2.  Nitrous…

A: A buffer solution is the mixture of weak acid and its conjugate base. It is also formed by the…

Q: What is the pH of the buffer that results when 12.3 g of NaH2PO4 and 7.79 g of Na2HPO4 are diluted…

A: Given: Mass of NaH2PO4 = 12.3 g Mass of Na2HPO4 = 7.79 g Molar mass of NaH2PO4 = 120.0 g/mol Molar…

Q: To produce a formate buffer solution that is at a pH of 4.06, what should the concentration of the…

A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The…

Q: The acid HZ has a pKa of 7.03.  If 25.00 mL of a 0.111 M solution of HZ are titrated with 0.100 M…

A: The objective of the question is to determine the pH before the addition of any base.It is given…

Q: The pKa of lactic acid is 3.86. What is the pH of a buffer in which the lactic

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Q: You are asked to make a buffer of pH 3.4 and given the above acids. Of these acids, which would…

A: A buffer solution is a mixture of a weak acid and its conjugate base or weak base with its conjugate…

Q: What is the ratio of formic acid (HCO2H) to formate (HCO2–) in a solution that is buffered at a pH…

A: The solution with correct answer is provided below:

Q: In the past, boric acid was used to rinse the inflamed eye. What is the H3BO3/H2BO3- ratio in a…

A: pKa of boric acid = 9.14 Given, pH = 8.40

Q: What is the pH of a buffer solution that contains 0.245 M weak acid and 0.450 M of the conjugate…

A:

Q: After a buffer solution of carbonic acid (with pKa of 3.75) was added with 1ml of sulfuric acid, the…

A: Buffer solution is that which resist the change in pH value pH of a weak acid and it's conjugate…

Q: A chemistry student is asked to maked a buffer of pH = 4.0. Which of the following acids would be…

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Q: EXPERIMENTAL DATA Recall the data table provided in your lab manual, shown below. Sample HIn (mL)…

A: Mixture of acetic acid and sodium acetate is an example of buffer mixture. For the buffer mixture of…

Q: 1. A buffer solution is made from 0.4M CH3COOH and 0.6M CH3COO–. If the acid dissociation constant…

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Q: Calculate the ratio of conjugate base to weak acid needed to make a buffer at pH 4.75 if the pKa of…

A: pH = 4.75pKa = 5.32

Q: Calculate the ratio of the concentration of acetate and acetic acid requires in a buffer system of…

A: Answer: 3.5 is the ratio of the concentration of acetate and acetic acid.

Q: What is the pH of a buffer solution prepared by mixing 20.0 mL of 0.0600 mol L-' NaOH with 20.0 mL…

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.