You want to prepare a Glycine buffer (pKa’s 2.3 and 9.6) to simulate the pH in the intestine. You decide to make 150 mL of 300 mM glycine at pH 8.6. However, you only have glycinyl chloride (MW 111.5), 10 M HCl, 10 M NaOH, and water. Describe how to make this buffer with these materials

Q: A student is asked to prepare a buffer with a pH of 5.40 by adding sodium hydroxide to a weak acid.…

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

Q: You need to make a buffer that has a pH of 5.72 that contains exactly 55 mM of a weak base. The…

A: We will solve this question using henderson hasselbalch equation.

Q: ou need to prepare 100.0 mL of a pH 4.00 buffer solution using 0.100 M benzoic acid (pKa = 4.20) and…

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Q: You need to prepare 100.0 mL of a pH 4.00 buffer solution using 0.100 M benzoic acid (pK, = 4.20)…

A: The solution is given in the next step: Given data: *Volume of buffer is 100 ml. *Molarity of…

Q: Suppose there is 1.00 L of an aqueous buffer containing 60.0 mmol of benzoic acid (pKa = 4.20) and…

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Q: Study the Lewis structure of a generic amino acid shown below. Identify the part of a generic amino…

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Q: You are making a potassium phosphate buffer that has 50 mM total phosphate (weighed out as KH2PO4),…

A: Given  concentration of KH2PO4 = 50 mM concentration of stock KH2PO4= 2M = 2000 mM volume = 377 mL

Q: What ratio of CH₃NH₂ to CH₃NH₃⁺ is needed to prepare a pH 10.20 buffer? (Kb for CH₃NH₂ is 4.4 ×…

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Q: A recipe for a particular buffer calls for 14.2 g anhydrous sodium phosphate (M.W. 141.96) per 1…

A: The buffer needs 14.2 g of anhydrous sodium phosphate per 1 liter of solution.

Q: From the following list, choose 2 reagents and calculate the quantities that are required to make…

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Q: phosphate buffer at pH 7.5. You are out of solid versions of phosphate, but you find stock solutions…

A: Solution: Postpartic acid is tribasic basic acid (contains three protons), therefore it have three…

Q: A solution containing .30 M methylamine (CH3NH2) and .33 M methylamonium chloride (CH3NH3Cl) has a…

A: 1. Given that,  Concentration of CH3NH2 = 0.33 M Concentration of CH3NH3Cl = 0.30 M pH of the mixed…

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: A purified protein is in a 100. mM HEPES buffer pH 7.3 with 500. mM sodium chloride (NaCl). A 25.0…

A: Given that: pH = 7.3 Concentration of HEPES with NaCl = 100 mM  Concentration of NaCl in HEPES…

Q: If you have unlimited amounts of water, solid sodium formate (MW 68g/mol), and 100 mL of 0.1 M…

A: A buffer is a solution that can resist pH change upon the addition of acidic or basic components. It…

Q: A student wants to prepare a 400 mL of 1.00 M buffer with a pH of 3.2. Which of the following…

A: A buffer is a solution which resist change in pH and obtained when a weak acid and the salt of its…

Q: You find 425.0 ml of 0.350 M sodium oxalate in the lab, and you want to use it to make a buffer with…

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

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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: 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 buffer is prepared using 0.25 moles dihydrogen phosphate and 0.15 moles mono hydrogen phosphate in…

A: The given buffer is of dihydrogen phosphate (H2PO4- ) and monohydrogen phosphate (HPO42- ). The pH…

Q: Consider a buffered solution with a pH of 11 that contains tyrosine as a free amino acid. W the net…

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Q: Benzoic acid (let’s call it HA) has Ka = 6.3 × 10−5 and pKa = 4.20. A buffer with [HA] = 0.100 M and…

A: Given data,pKa=4.20[HA]=0.10M[A-]=0.063MMolarity of NaOH=0.10MVolume of NaOH=20.0mL=0.02LVolume of…

Q: A buffer solution contains 0.237 M C6H5NH3 Cl and 0.366 M C6H5NH₂ (aniline). Determine the pH change…

A: Volume of buffer solution V = 1.00 L Number of moles of HCl added = 0.090 mole Concentration of…

Q: c) A student titrated 50.0 mL of a 0.10 M solution of a certain weak acid with NaOH. The results are…

A: Identify a pH value between 2.5 and 7.5 at which the concentration of the weak acid being titrated…

Q: You have a 272.5-ml. sample of 1.2 M acetic acid (Kg = 1.8 x 10). Calculate the pH after adding…

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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: A student needs to prepare a buffer solution with a pH of 5.10. Assuming a pka of 4.37, how many mL…

A: Since concentration of HB and B- are the same (both at 0.1 M), we'll use the second expression for…

Q: Given the following buffer systems, the acetate buffer system would be the best choice to create a…

A: Answer: A buffer solution is the type of solution that resist the change in its pH on adding small…

Q: A buffer contains 0.175 moles C2H5NH3NO3 and 0.225 moles C2H5NH2 in 800.0 mL water. Kb (C2H5NH2) =…

A: Calculation of pKb: pKb=-log Kb=-log 4.3×10-4=3.37 Calculation of initial pOH:…

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

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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: As an FDA physiologist, you need 0.250 L of formic acid (HCOOH)–formate (HCOO-) buffer. The pKa of…

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

Q: If you had a 0.10 M solution of each of the following organic acids: Acetic Acid Ka=1.8x10-5 Citric…

A: we have to select the acid that will produce a buffer with highest pH

Q: You find 425.0 mLof 0.350 M sodium oxalate in the lab, and you want to use it to make a buffer with…

A: Volume of sodium oxalate = 425 mL or 0.425 L Molarity of sodium oxalate = 0.350 M Moles of sodium…

Q: Suppose there is 1.00 L of an aqueous buffer containing 0.0600 mol of benzoic acid (pKa = 4.20) and…

A: A buffer solution is made with weak acid and its conjugate base or weak base and Its conjugate acid.…

Q: What is the proper unit of molar ratio of weak acid and its conjugate base in a buffer solution? Is…

A: To determine the proper unit of molar ratio of weak acid and its conjugate base in a buffer solution

Q: How many grams of sodium acetate (CH3CO2Na, Mw =82.0 g/mole) should be present in 1.0 L of 0.65 mole…

A: Given that  Acidic Buffer solution of  sodium acetate and acetic acid  pH for buffer = 4.47 Ka for…

Q: Which of the following acids (and their sodium salts) would be the best choice to make a buffer at…

A: Given:e. Chloroacetic acid ()f. Propanoic acid ()g. Benzoic acid () h. Hypochlorous acid ()The acid…

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: 1. A buffer is prepared using 0.522 mol of NH4CI and 0.812 mol of NH3 to make 1.00 L of solution.…

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Q: where did the 3.18 come from?

A: