You are to prepare 100 mL of a 50 mM Tris buffer (121.14 g/mol* & pKa = 8.3) at pH 8.2. You have 0.1 M HCl (36.46 g/mol) and 0.1 M KOH (56.1056 g/mol) at your disposal. Show how you would prepare this buffer. Note: Tris is in the base form and is a solid This is all of the information I was given for this calculation. *Molecular weight for Tris is based on a Google search and wasn't given to me

Q: A student needs to prepare a buffer made from HF and KF with pH 3.428. If Ka for HF is 7.20 × 10-4,…

A:

Q: A student needs to prepare a buffer solution with a pH of 4.65. Assuming a pKa of 4.57, how many mL…

A: Given: pH of buffer = 4.65  pKa of acid = 4.57  Concentration of HB = 0.1 M Volume of HB solution =…

Q: Stock solution of NaCl is 0.8 M and KCl is 0.5M in concentration. Buffer Bhas 150 mM NaCl and 200 mM…

A: We need to use the dilution formula, M1V1 =M2V2 M1 is the molarity of solute in the stock solution…

Q: Calculate the OH and the pH of a solution with an [H] = 5.6 x 10-¹0 M at 25 °C. [OH-] = 1.8 x10-5 pH…

A: The sum of the pH and pOH should be 14 always.  For multipart questions, we are asked to solve the…

Q: Describe, quantitatively, how you would make 250 mL of a 40 mM HEPES buffer at pH 7.60. You have…

A: Introduction: A buffer solution is a solution in which small addition of strong acid or base does…

Q: emistry A 110.0-mL buffer solution is 0.105 M in NH3 and 0.135 M in NH4Br. The Kb value for NH3 is…

A: The answer is as follows:

Q: Example: A solution buffered at pH 3.90 is needed for a reaction. Would formic acid and its salt,…

A: Given: A solution buffered at pH 3.90 is required for a reaction. ka of formic acid is 1.8 x 10-4

Q: How many grams of KHCOO (MM = 84.12 g/mol) must be added to 1.00 L of 0.256 M HCOOH to make a buffer…

A: pH of an acidic buffer solution can be calculated from Henderson hasselbalch equation. pH = pKa +…

Q: Consider a 1.0 L buffer containing 0.11 mol L-1 HF and 0.11 mol L-1 F-. What is the pH of the…

A:

Q: How many grams of solid potassium fluoride should be added to 1.00 L of a 0.140 M hydrofluoric acid…

A: Given -Volume= 1.00L Concentration of hydrofluoric acid= 0.140 M pH= 4.097 Ka(HF)=7.20×10-4Mass of…

Q: A student needs to prepare a buffer solution with a pH of 5.20. Assuming a pKą of 4.52, how many mL…

A: I have attached the detailed solution to the question below.

Q: 3. Are any samples neutral? Explain how you know this. Hzo iS newtial due to no conductiurty. red…

A: BUFFER IS THE CONCENTRATED SOLUTION OF A WEAK ACID (OR BASE) TOGETHER WITH THE SALT CONTANING THE…

Q: A student has 80.0 mL of a 0.90 M citric acid (Ka =8.4*10^-4 solution and will titrate with a  0.65…

A: Given,  Molarity of citric acid (say HA) = 0.90 M  Volume of HA in mL = 80.0 mL  Acid dissociation…

Q: Calculate the mass of C5H5NHCI (molar mass = 113.56 g/mol) that must be added to 0.80 L of 2.5 M…

A: Given, Kb of C5H5N( weak base)  is 1.8 X 10-9Therefore, pKb = - log(Kb)                            =…

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: What is the pH of a buffer produced by mixing 250 mL of 0.521 M NH3 with 350 mL of 0.123 M NH4Cl ?…

A: We have to calculate the pH of the buffer solution

Q: A buffer is prepared by adding 907 mL of 0.432 M HCl to 1140 mL of a 1.50 M NaCNO solution. What is…

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

Q: A buffer solution contains 0.236 M C6H5 NH3 Br and 0.470 M C6 H5NH2 (aniline). Determine the pH…

A: The objective of the question is to determine the pH change.The value of  for aniline is .The  is…

Q: A1.00 L buffer solution is 0.250 M in HCN and 0.250 M in NACN and has a pH = 9.31. You add 0.100…

A: Given : Volume of buffer solution = 1.00 L Concentration of HCN = 0.250 M Concentration of NaCN =…

Q: A buffer system is prepared that is 0.020 M in NH3 and 0.030M in NH4*. What is the concentration, in…

A:

Q: You make 250 mL of a 75 mM CHES buffer (pKa=9.3) and adjust the pH to 9.0. Determine what volume (in…

A: To determine the volume of 0.85 M NaOH required to exceed the buffer capacity, we need to first…

Q: You are asked to prepare 2.0 L of a HCN/NaCN buffer that has a pH of 9.8 and an osmotic pressure of…

A: Osmotic pressure can be calculated as:

Q: 141480 4. A student needs to prepare a buffer solution with a pH of 5.59. Assuming a pka of 4.54,…

A: Given,pH of the buffer solution = 5.59The pKa of buffer = 4.54Concentration of NaOH solution = 0.1…

Q: A buffer is prepared by mixing 48.2 mL of 0.196  M NaOH with 144.3  mL of 0.231 M acetic acid. What…

A: The objective of this question is to calculate the pH of a buffer solution after the addition of a…

Q: The K₂ for the acid HX is 2.714. 10-5. How many moles of Nax need to be mixed with 2.586 L of 0.152…

A: We will first determine the moles of acid. we  know pKa= -logka,we will make use of equation-

Q: Determine the mass of solid NaCH₃COO that must be dissolved in an existing 500.0 mL solution of…

A:

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

A: The pH of the given buffer solution of C2H5NH3NO3 and C2H5NH2 is;…

Q: You have 0.500 L of an 0.250 M acetate buffer solution (i.e. [HC₂H302] +[C₂H3O2] = 0.250 M) at pH…

A: NaOH react with acetic acid to form sodium acetate.  NaOH + HC2H3O2→NaC2H3O2 + H2O

Q: You are working in a lab that studies the psychedelic prodrug, psilocybin. You need to make 1.0…

A: Answer: Buffer solution is a type of solution that resists the change in its pH on adding small…

Q: How many g of sodium nitrate (NaNO2, 100% ionized in water) do you need to add to 4.00L of 0.500M…

A:

Q: You make a buffer using 250mL of 0.500M sodium acetate and 250mL of 0.500M acetic acid. How many mL…

A: A buffer solution is a solution that resists the change of pH upon the addition of a small amount of…

Q: genow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator%=Dassignment-take, [References) How…

A: pH is calculated if buffer solution using Henderson equation.

Q: How many milliliters of 0.100 M HCl should be added to 5.00 g of sodium acetate (82.03 g/mol) to…

A: Given: The molarity of HCl = 0.1 M. The mass of sodium acetate, (m) = 5 g The molar mass of sodium…

Q: You have 100 mL of an acetic acid/acetate buffer. The solution is comprised of 0.33 M acetic acid…

A:

Q: A buffer is prepared by mixing 43.2 mL of 0.196 M NaOH with 141.2 mL of 0.231 M acetic acid.…

A: Concentration of NaOH= 0.196M  Volume of NaOH = 43.2ml = 0.0432L  Concentration of acetic acid=…

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.