A researcher in Biochemistry is isolating α-glucosidase enzyme from malted wheat flour. The protocol requires the use of 2.00L of 0.225 M of lactate buffer with pH of 4.25. How will he/she prepare this buffer from 2.00 M lactic acid solution and solid sodium lactate (NaC3H5O3) The Ka of lactic acid is 1.38 x 10-4. [ Na=23.0, C=12.0, H=1.01, O=16.0 g/mol]

Q: Calculate the mass of sodium acetate that must be added to 2.4 L of a 0.150 M acetic acid solution…

A: Since acetic acid is monoprotic acid Hence the pH of monoprotic acid buffer is given by…

Q: A buffer contains 0.025 mol of lactic acid (pK, = 3.86) and 0.060 mol of sodium lactate per liter.…

A: Dear student, As you have asked multiple question but according to guidelines we will answer the…

Q: A buffer is created by dissolving 0.303 moles of lactic acid and 0.197 moles of sodium lactate in…

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Q: A 50.00-mL aliquot of 0.0500 M formic acid (Ka = 1.80 x 10-4) is titrated with 0.0500 M strong base.…

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Q: An industrial chemist studying bleaching and sterilizing prepares several hypochlorite buffers.…

A: Solution- Handerson Hasselbalch equation –  Buffer solution is mixture of weak acid and its…

Q: A buffer solution was prepared by mixing 300.0 mL of a 0.200 M solution of hydoxylamine (OHNH2, Kb =…

A: Added NaOH is reacts with salt. For pH  calculation using Henderson Hasselbalch equation.

Q: Calculate the pH for a buffer that is 0.050 M benzoic acid and 0.150 M sodium benzoate. The Ka for…

A: The pH of buffer solution can be calculated by using Henderson Hesselbach equation - pH = pKa + log…

Q: A buffer solution is prepared with 0.48 M of the weak base B and 0.23 M of the chloride salt HBCl.…

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Q: How many grams of solid sodium nitrite should be added to 2.00 L of 0.117 M nitrous acid solution to…

A: Here we are required to find the mass of sodium nitrite needed to prepare buffer of pH =4.25

Q: A buffer solution is prepared with 0.48 M of the weak base B and 0.23 M of the chloride salt HBCl.…

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Q: A chemistry graduate student is given 100. mL of a 1.20M propanoic acid (HC, H, CO,) solution.…

A: Given : Volume of solution = 100 mL = 0.100 L                                       (Since 1 L =…

Q: Laboratory Experiments 75 5. Sodium carbonate is a reagent that may be used to standardize acids in…

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Q: a. How many grams of dry NH4CI need to be added to 2.40 L of a 0.300 M solution of ammonia, NH3, to…

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

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: 3.  What is the pH of a buffer made by mixing 1.00 L of 0.020 M benzoic acid, HC7H5O2, with 3.00 L…

A: Given, the molarity of benzoic acid = 0.020 MMolarity of sodium benzoate = 0.060 MThe total volume…

Q: A buffer solution contains 1.250 mol of phenol, C6H5OH, and 0.950 mol of sodium phenoxide, C6H5ONa,…

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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: A buffer is prepared by mixing 35.2 mL of 0.183  M NaOH with 141.2  mL of 0.231 M acetic acid. What…

A: Given: Concentration of acetic acid = 0.231 M Volume of acetic acid solution = 141.2 mL = 0.1412 L…

Q: How many grams of solid sodium acetate should be added to 1.00 L of a 0.275 M acetic acid solution…

A: A buffer solution is the one that resists any change in pH when acid or base is introduced in it in…

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: Use the Henderson-Hasselbach equation to calculate the initial pH of a sodium acetate/acetic acid…

A: Given that: molar mass of NaCH3COO.3H2O = 136 g/mol Ka = 1.8 x 10-5 volume of  acetic acid = 150 mL…

Q: Acetate buffers are used in biochemical studies of enzymes and other chemical components of cells to…

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Q: Consider a buffer made by adding 42.3 g of (CH3)2NH2I to 250.0 mL of 1.42 M (CH:)2NH (Kb = 5.4 x 10…

A: (CH3)2NH is a weak base and (CH3)2NH2I is its salt with a strong acid HI. Thus, the mixture is a…

Q: Consider a buffer made by adding 132.8 g of NaC,H5O2 to 300.0 mL of 1.31 M HC,H5O2 (Ka = 6.3 x 10-5)…

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Q: Consider a buffer made by adding 32.7 g of (CH₃)₂NH₂I to 250.0 mL of 1.42 M (CH₃)₂NH (Kb = 5.4 x…

A: Number of Mole- Ratio of given mass of substance to the molar mass of substance is called number of…

Q: What is the pH of a buffer that contains 0.15 M CH3COOH and 0.10 M NaCH3COO (K, = 1.8 x 10$)?

A: Given : Concentration of weak acid CH3COOH = 0.15 M And concentration of conjugate base salt of weak…

Q: An acetic acid buffer contains 0.6 M CH3COOH and 0.6 M CH3COONA. (CH3COOH has a K, 1.76 x 105.) What…

A: Given- Concentration of CH3COOH= 0.6M Concentration of CH3COONa= 0.6M Ka of CH3COOH=1.76 ×10 -5…

Q: You have a 0.500L buffer with [HCIO] = 0.184 M and [NaClO] = 0.541 M. What is the pH after the…

A: Volume=0.500L  [HClO]=0.184M [NaClO]=0.541M  Moles of HCl =0.024 mol pKa = 7.54

Q: What mass of sodium benzoate should you add to 150.0 mL of a 0.17 molL−1 benzoic acid solution to…

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Q: What is the pH of a buffer that contains 0.250 mol of CH3NH2 and 0.450 mole of CH3NH3CI? Kb for…

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Q: NaF solution added drop wise to 0.0144 M solution in Ba? What is the lowest concentration of F…

A: Hi, since you have posted multiple questions, we will answer the very first question for you. Kindly…

Q: What is the molar solubility of Ag2SO4 in a solution that is 0.0522 M H2SO4? Ksp= 1.40x10^-5…

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Q: A volume of 500.0 mL of 0.160 M NAOH is added to 545 ml. of 0.250 M weak acid (K, = 8.52 x 10-5).…

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Q: a. What is the pH of an aqueous solution of 100.0 mL with 1.00 mmol Ca(OH)2 (74.1 mg) dissolved in…

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Q: Tris(hydroxymethyl)aminomethane is a common base used to prepare buffers in biochemistry. Its Kb is…

A: To calculate pH of a basic buffer , we would first calculate its pOH using Henderson-Hassalbalch…

Q: 3e-11. (a) What is the pH of this buffer? pH =  (b) What is the pH of the buffer after the…

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Q: what is the ph of a buffer that consists of 0.86 m HBrO (ka= 2.29 x 10-9) and 0.41 M KBr

A: The pH of a buffer solution can be determined using Handerson Hasselbach equation that suggests the…

Q: pH of the buffer after the addition of the NaOH

A: pKa(CH3COOH) = 4.74 Moles = M × V (L)   Moles of Acetic acid =  M × V(L)     = 0.281 × 0.300   =…

Q: A buffer solution contains 0.53 mol of hydrosulfuric acid (H2S) and 0.10 mol of sodium hydrogen…

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Q: Calculate the pH of a buffer that contains 0.390 M hydrazine, N2H4 (Kb = 1.3 × 10−6), with 0.264 M…

A: The H+ concentration of hydrogen ions that the given solution consists of determines the basic or…

Q: How many grams of (CH3)2NH2CI must be added to 1.00 L of 0.200 M (CH3)2 NH to produce a buffer with…

A: Given : Concentration of (CH3)2NH = 0.200 M Volume of buffer solution = 1.00 L pH of buffer = 10.65…

Q: A. What is the pH of a buffer solution that is composed of 50.0 mL of a 0.25M weak base, Phyllis…

A: The question is based on the concept of buffer solution.   A buffer is a solution which resist any…

Q: 4. Two RND Engineers were assigned to create buffer solutions for two separate product lines that…

A: We need to prepare buffer solutions and need to calculate pH and need to maintain it so that it…

Q: 1. A buffer is prepared containing 1.00 molar Acetic Acid and 1.00 molar Sodium Acetate. What is its…

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

Q: A general chemistry student performs a titration with 28.4 mL of 0.294 M weak acid solution with a…

A: Introduction The details and data about the H+ ions (hydrogen ions) are derived by deriving any…

Q: Calculate the solubility of Ba(103)2 in a solution prepared by mixing 200 ml of 0.0100M Ba(NO3)2…

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Q: A buffer solution contains 0.63 mol of hydrosulfuric acid (H,S) and 0.42 mol of sodium hydrogen…

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Q: What is the pH of a buffer solution prepared by dissolving 33.7 g NaCH3COO in a sufficient volume of…

A: Solution -

Q: How many grams of sodium hypochlorite, NaCIO, need to be added to 227 mL of a 0.185 M solution of…

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Precipitation Titration

Precipitation analysis is used to analyze drugs, and to measure the salt content in food and beverages. It is an important concept from the examination point of view many practical questions are asked on the topic. This topic is significant in the professional exams for both undergraduate and graduate courses, especially for