Devon’s laboratory is out of material to make phosphate buffer. He is considering using sulfate to make a buffer instead. The p?apKa values for the two hydrogens in H2SO4H2SO4 are −10−10 and 2.2. Will this approach work for making a buffer effective near a pH of 7?7?   A. no B. yes C. not enough information to answer   What is the optimal pH for sulfate‑based buffers? Enter your answer as a whole number.

Q: A. What is the component concentration ratio, [NH3]/[NH4 + ] of a buffer that has a pH of 9.18? B.…

A: Here we can solve the given problem by applying Henderson Hassel-Blach equation .

Q: Henderson-Hasselbalch

A:

Q: 1. What is the pH of a buffer that contains 1.100 M NH3 and 1.300 M NH4+? Ka= 5.70x10-10 What would…

A: As per our guidelines, we are supposed to answer only one question. Kindly repost other question as…

Q: What is the pH of a buffer solution that contains 0.30 M H2PO4–1  and 0.60 M HPO4–2  ? Given: pKa…

A:

Q: 60.0 mL of 0.60 M NAOH is titrated using 0.20 M H2SO4. What is the volume of H2SO4 needed to reach…

A: Given that:4 Molarity of NaOH = 0.60 M Volume of NaOH = 60.0 mL = 0.06 L Molarity of H2SO4 = 0.20 M…

Q: 3) Arsenic acid has 3 pK,'s: 2.19, 6.94, and 11.51. Determine the concentrations of all the species…

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Q: A 0.987 g sample of a solid, weak, monoprotic acid is used to make 100.0 mL of solution. 60.0 mL of…

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Q: A buffer made up of equal volumes (242.1 mL) of each of 0.723 M A H and 0.706 M A minus. What is p H…

A: The pH of a buffer can be calculated by the Henderson Hasselbalch equation. pH=pKa+logA-HAA-=conc.…

Q: The buffer in this experiment is made of acetic acid HC2H3O2 and sodium acetate NaC2H3O2 (C;H3O2 ).…

A: When NaOH solution is added to buffer solution , it would react with Acidic part of buffer solution…

Q: 3) Prepare 250 ml of 0.1 M Tris-HCI buffer, pH 7.8 as follows: Weigh 3.029 g of Tris = Tris…

A: The calculation for the preparation of 250 mL of Tris-HCl buffer solution pf pH 7.8 is needed to be…

Q: a) A nitrous acid/sodium nitrite buffer solution is prepared.  20.0 mL of 6.50 M nitrous acid (HNO2)…

A: Q5:  #(a):  Volume of 6.50 M HNO2 added = 20.0 mL * (1L/1000 mL) = 0.0200 L  => Moles of HNO2…

Q: What is the final pH of a buffer prepared by mixing 450 mL of 0.25 M Tris base with 130 mL of 0.50 M…

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Q: Draw the shape of a pH curve for the titration of 400 mL of 1.0 M H2SO3 with 0.5 M NaOH. What type…

A: The titration curve for the titration of 400 mL of 1.0 M H2SO3 with 0.5 M NaOH solution is needed to…

Q: What will be the pH of a buffer prepared from 5.3 g of NH4Cl and 35 mLs of 1 M NaOH, diluted to a…

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

Q: How much acetic acid (of a 17.4 M stock) and sodium acetate (in g) are needed to prepare 1 L of a…

A: Solution - According to the question - Given values are - the mass of sodium acetate neeeded to…

Q: What is the acid component and base component of the buffer solution? What are the moles of each…

A: Since you have asked a question with multiple subparts, we will answer only first 3 subparts for…

Q: Consider the titration of 40 mL of 0.40 amino acid Trp with 0.20 M KOH. Ka1= 4.30 x 1o-3 Ka2= 4.50 x…

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

Q: 2) For this problem, refer to the titration chart below 14.0 12.0 100 8.0 pH 6.0 4.0 2.0 5.0 10.0…

A: The titration curve given is as shown below.

Q: .What is the type of reaction involved? SA + SB SB + SA WA + SB WB + SA   2.What is the preferred…

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

Q: Prepare a 250-mL buffer with pH = 4.40 from solid reagents benzoic acid (C6H5COOH; M = 122.123 g…

A: We are asked to do calculations for a acidic buffer solution that contains a weak acid, benzoic…

Q: 5.) Buffer solutions contain salt (e.g. NaCI), real buffer and protease inhibitors. Imagine you…

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Q: made by mixing 600.0 mL of 0.10 M NH3 with 400.0 mL of 0.10 M NH4Cl. Kb is 1.8 x 10-5 a. What is the…

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Q: Which of the following buffers will best prevent changes in pH when 100 μl of 1.0 M HCl is added to…

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

Q: solution containing 50.0 mL of 10 ‐ ² M Ca² + ions in the NH4 + / NH3 buffer whose pH is made to 9…

A: This is a method of quantitative estimation of concentration of unknown solution by titrating it…

Q: A stock solution contains 1.4 mM phosphate. From this stock solution, 51.4 uL is diluted with 264 uL…

A: Concentration of Stock solution, C1 =1.4 mM Volume of stock solution taken, V1 = 51.4 μL…

Q: 3. Prepare a 250-mL buffer with pH = 4.40 from solid reagents benzoic acid (C6H5COOH; M = 122.123 g…

A: Given: Volume of buffer= 250 mL pH = 4.40 pKa of benzoic acid = 4.202 Molar mass of benzoic acid =…

Q: have to be added to 1.0 L of a 1.948 M HA solution in order to obtain a buffer of 3.11? (The Ka for…

A: We will use buffer equation

Q: Your goal is to make a buffer with a pH of 4.75 from acetic acid and sodium acetate. Assume the pka…

A: According to given equation,  pH =pKa + log(base/acid) As pH=4.75 pKa=4.74 Hence,…

Q: What mass in unit of gram of solid NaHCO3 (molar mass = 84.00 g/mol) should be added to 1.00 L of…

A: In this question, we want to determine the mass of NaHCO3.  How we can determine, you can see…

Q: How would you prepare 1.00 L of a buffer with a pH of 7.00 from 0.200 M H3PO4 and 0.160 M NaOH?…

A: Given: pH of buffer required = 7.00  Volume of buffer required = 1.00 L Concentration of H3PO4 =…

Q: A particular buffer has been made up at 25 °C to give a pH of 8.00 and is then warmed to 35 °C. The…

A: The expression of Henderson-Hasselbalch equation is shown below:

Q: Calculate the pH of 1.00 L of 0.195 M HC2H3O2 /0.125 M C2H3O2 - buffer system after the addition of…

A: Given, Concentration of HC2H3O2 = [CH3COOH] = 0.195 M Concentration of C2H3O2- = [CH3COO-] = 0.125 M…

Q: A 100.0-mL aliquot of 0.100 M diprotic acid H2A (pK1 = 4.00, pK2 = 8.00) was titrated with 1.00 M…

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Q: 50.0 mL of 0.31 M acrylic acid (C2H3COOH, Ka = 1.71 x 10 ) solution is titrated with 0.31 M NAOH to…

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Q: How many grams of solid potassiumfluoride should be added to 2.00 L of a 0.236 M hydrofluoric acid…

A:

Q: BUFFERS, HYDROLYSIS OF SALTS 1. A 0.0250 M Ca(X)2 has a pH of 8.049. Ca(X)2 is composed of a Ca2+…

A: We are authorised to solve only first three subparts of a question. Please post rest of the subparts…

Q: Your goal is to make a buffer with a pH of 4.75 from acetic acid and sodium acetate.  Assume the pKa…

A: Buffers are solutions that resists the change in pH on addition of small amount of acid or base to…

Q: How would you prepare 1.00 L of a buffer with a pH of 7.00 from 0.200 M H3PO4 and 0.160 M NaOH?…

A: Given: pH of buffer required = 7.00  Volume of buffer required = 1.00 L Concentration of H3PO4 =…

Q: A. How would you prepare 1.5L of a buffer of pH = 4.00 using 0.25M formic acid and solid sodium salt…

A: we konw, pKa of formic acid = 3.8

Q: You want to prepare a Glycine buffer (pKa’s 2.3 and 9.6) to simulate the pH in the intestine. You…

A: Given  Desired pH = 8.6 pKa value closer to desired pH = 9.6

Q: 20.00 mL of 0.0750 M benzoic acid ( C6H5COOH) is titrated with 0.0250 M NaOH. Ka benzoic acid = 6.5…

A: Given: Volume of benzoic acid solution (Assuming HA) = 20.00 mL = 0.020 L                    (Since…

Q: The Ka of bromoacetic acid is 2.00 ×10–3. What masses of bromoacetic acid (CH2BrCOOH) and sodium…

A: The buffer reaction is - Given, the total concentration = 0.200 M pH of buffer = 2.100 Volume of…

Q: What is the least volume of 3.10 M HCl(aq) that will exceed the buffer capacity of 1.00 L of a…

A:

Q: 12.A buffer was prepared by mixing 65.0 mL of 0.179 M NaHSO3 with 90.0 mL of 0.150 M NazSO3. Ka =…

A: The pH of the buffer solution is given by Hendersen-Hasselbalchequation:pH = pKa+ log saltacid…

Q: How many mL of 4.50 M sodium hydroxide must be added to 250 mL of a 0.200 M acetic acid solution to…

A: Given : Concentration of sodium hydroxide i.e NaOH = 4.50 M Volume of acetic acid i.e CH3COOH…

Q: Which of the following indicators will be the most appropriate to be used for the titration of 15.0…

A: Answer: In the acid-base titration, indicator is used to indicate that titration has been completed…

Q: What masses of dimethylamine and dimethylammonium chloride do you need to prepare 6.00 L of pH =…

A: Given: The total concentration of dimethylamine and dimethylammonium chloride is 0.500 M The volume…

Q: Please only solve PART 2 of this problem to find the pH if we get a very small X value for molarity…

A: The balanced chemical equation between acetic acid and sodium hydroxide is given by

Q: A buffer used in an experiment is 20 mM HEPES with a pH of 7.7. 25mM KCI, 5mM MgCl2 buffer. Explain…

A: Solutions- Given data- 20 mM HEPES with a pH of 7.7, 25mM KCl, 5mM MgCl2 buffer

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.