Choose the buffer with the greatest buffering  capacity:     d. 0.25M formic acid/formate buffer at pH 3, pKa 3.75   b. 0.25M  HEPESH+/HEPES buffer at pH 10, pKa = 8.08   c. 0.75M acetic acid/acetate buffer at pH 4.76, pKa = 4.76   a. 1M acetic acid/acetate buffer at pH 4.76, pKa = 4.76

Q: A pH 7.0 buffer solution is made using NaOH and phosphoric acid. The sum of the concentrations of…

A: Phosphoric acid is a triprotic acid and furnishes three H+ in solution per molecule. The equilibrium…

Q: Design a buffer that has a pH of 3.56 using one of the weak acid/conjugate base systems shown below.…

A: Here we have to determine the mass potassium salt of weak acid and potassium salt of conjugate base…

Q: Design a buffer that has a pH of 3.76 using one of the weak acid/conjugate base systems shown below.…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Describe the titration curves of each of the acids. Weak acids pK1 pK2 pK3 Phosphoric acid 2.15…

A: Two significant ideas in science are titration and corrosive base responses. Titration is the…

Q: A buffer contains the weak acid HA and its conjugate base A−. The weak acid has a pKa of 5.25 and…

A: The objective of the question is to determine the relative concentrations of the weak acid (HA) and…

Q: A purified protein is in a buffer solution at pH 7 with 800 mM NaCl. A 1 mL sample of the protein…

A: The term "molarity" describes the degree to which concentrations of a certain chemical species are…

Q: Benzoic acid-sodium benzoate buffer is prepared by mixing 0.4 mol of benzoic acid (Ka = 6.3 x 10-5…

A:

Q: In the lab background and part II section A of the lab protocol, you determined how to make the…

A: The law of dilution states the following relation: Where C1 and C2 are the concentrations of the…

Q: When 40 mL of benzoic acid (C6H5COOH) and 35 mL of potassium hydroxide were titrated, the pH at the…

A: Benzoic acid is a weak acid when strong acid like KOH reacts with it, before equivalence point it…

Q: buffer is made of 0.015M sodium formate (HCOONa) and 0.025M formic acid (Ka= 1.77×10^-4) with a…

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Q: Consider a 25.0 mL buffer solution containing 0.100 M sodium alderate and 0.126 M alderic acid.…

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Q: How many grams of the chloride salt of the conjugate acid must be combined with how many grams of…

A: Q1)                             pH = 4.73 pOH = (14.00 - 4.73) = 9.27 To get pOH of 9.27 , we have…

Q: Design a buffer that has a pH of 7.76 using one of the weak acid/conjugate base systems shown below.…

A: pH can be determined using H-H equation.

Q: How many ml of NaOH stock solution have been added to establish the buffer?

A: To prepare the desired buffer solution, at first, an acetic acid solution was taken and NaOH was…

Q: tion Design a buffer that has a pH of 6.42 using one of the weak acid/conjugate base systems shown…

A:

Q: For a titration of 50.0 mL of 0.100 M acetic acid with 0.100 M NaOH, calculate pH: 1. at 0.00 mL…

A: Part 4: Calculate the pH of the solution after adding 50.00 mL of 0.100 M NaOH.At the equivalence…

Q: Determine the correct answer on the following: Which source of error will cause an increase in…

A: Buffer capacity is the moles of acid/base required to bring a change in the pH of a solution by 1…

Q: Based on the shape of the curve, what is the nature of the analyte? Strong acid Strong base

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Acetic acid’s pKa is 4.75 and nitrous acid’s pKa is 3.16. If you made one buffer of equal parts…

A: Given: PKa of acetic acid = 4.75 PKa of nitrous acid = 3.16

Q: A student titrates 20.0 mL of 1.0 M NAOH with 2.0 M formic acid, HCOOH (K, = 1.8 x 10-4). How much…

A: we have, 20 mL of 1M NaOH 2M of HCOOH ( Ka= 1.8×10-4)

Q: You need to make 2.0 L of 0.200 M sodium phosphate buffer, pH 6.2. Using the stated pKa values for…

A: Buffer solutions are useful only when the desired pH is close to the pKa value of the acid-base pair…

Q: 4. ( You are performing the titration of a buffer with a pKa of 7.2. You start at the pka, and after…

A: A Buffer solution resist the change of pH,When small amount of acids ar base is added.

Q: Phosphoric acid is a triprotic acid (Kal = 6.9 × 10-3, Ka2 = 6.2 x 10-8, and Ka3 = 4.8 x 10-13). To…

A: We have to calculate pka and pH

Q: Based on the tritration curves shown below, what's the pKa of the weak acid being titrated? 14.00 12…

A: We have to find pKa of given weak acid from its titration curve

Q: Consider the titration of a 75.00 mL sample of 0.300 MM maleic acid, H2C4H2O4 with 0.280 M KOH. It…

A: Given, Volume of maleic acid = 75.00 mL = 0.075 L    (1mL = 0.001 L) Concentration of maleic acid =…

Q: When five drops of 0.10 M NaOH were added to 20 mL of the buffer in question 4, the pH went from…

A: The given buffer contains a weak acid HFor and its conjugate base For- (from the dissociation of…

Q: Which weak acid/conjugate base pair would make the best buffer at PH4.0? A formic acid/ formate,…

A: The required pH of the buffer solution = 4.0  Available weak acid/conjugate base pairs are:  formic…

Q: 11,The equivalence point of titrating of the weak base with the strong acid will be observed at…

A: 11. An acid reacts with a base to form salt and water. At the equivalence point, the moles of acid…

Q: DNA in water. Would you expect the double helix in a short segment of DNA to be more stable in 100…

A: DNA is the hereditary factor in livings which exhibit a coiled structure. The double helical…

Q: a) Calculate the pH after 0.0100 mol of H+ ions are added to 0.100L of buffer containing 1.00M…

A: Note: Since you have posted multiple questions, we will provide the solution only to the first…

Q: a) How many grams of sodium acetate, NACH3COO (molar mass: 82.0343 g/mol) should be combined with…

A: The answer to the following question is-

Q: 0.90 M CH3COONa 1.07 M CH3COOH Note: Reference the pK of acids at 25 °C table for additional…

A: Given,

Q: Phosphoric acid is a triprotic acid (K₁1 = 6.9 x 10³, K₁2 = 6.2 x 10%, and K3 = 4.8 × 10-1³). To…

A: Given,

Q: 1. 10 M HCI is titrated with 0.0993 M NaOH. [ Select ] 2. 10 M acetic acid (K, = 1.8x105) is…

A: To find suitable indicators for  1) Titration of HCl and NaOH. 2) Titration of CH3COOH and NaOH. 3)…

Q: Which buffer system is the best choice to create a buffer with pH = 7.30 ? HCIO2/KCIO2…

A: We would use Henderson Hasselbalch equation to calculate the ratio of concentration or moles of KClO…

Q: Your goal is to make a buffer with a pH of 4.95 from acetic acid and sodium acetate. Assume the pKa…

A:

Q: Which of the following buffer systems would be the best choice to create a buffer with pH = 9? For…

A: NH3/NH4Cl  is best choice for buffer of pH = 9.

Q: What ratio of sodium benzoate, C6H5CO2Na, to benzoic acid, C6H5CO2H, do you need to prepare a buffer…

A:

Q: 2. A researcher wants to make a buffer 4.0 x 10-4) and sodium nitrite. a) Determine the approximate…

A:

Q: From the list of acid-base indicators below, select the one BEST indicator for a titration with an…

A: The indicators are chemical compounds that show changes in color at a definite change in pH. Hence,…

Q: Phosphoric acid is a triprotic acid (K₁1 = 6.9 × 10-³, K₁2 = 6.2 × 10-8, and Ka3 = 4.8 × 10-¹³). To…

A:

Q: What volume of 2.00 M NaOH must be added to 300.00 mL of 1.00 M glycolic acid to produce a buffer…

A: Interpretation-  To determine the volume of 2.00 M NaOH must be added to 300.00 mL of 1.00 M…