Calculate the resulting pH of the buffer solution when 18 mL of 398 mM HCl is added to 1 L of a 50 mM MOPS buffer at pH = 7.2. The pKa for the MOPS compound is 7.2. Assume negligible volume change upon the addition of the acid.

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: 0.4052g sample of a solid monoprotic acid is dissolved in 25.0mL of solution and titrated with…

A: The question is based on the concept of titrations. We are  titrating a weak acid  with strong base.…

Q: A 50 mL buffer solution was prepared by adding 0.50 mmol of acetic acid into 0.50 mmol of sodium…

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Q: A buffer was prepared by adding 2.4 g ammonium nitrate to 100.0 mL 0.30 M ammonia (Kb = 1.8 x 10-5…

A: We have 2.4 g of ammonium nitrate , 100 ml of 0.3 M of ammonia, to this we added 10 ml of 0.3 M of…

Q: What volume of 1.24 M HCl must be added to 0.311 L of 0.213 M dimethylamine to produce a buffer with…

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Q: A chemistry graduate student is given 300. mL of a 1.30M diethylamine ((C,H5), NH) solution.…

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Q: buffer was made by combining 84.29 mL of 0.20 M acetic acid (pKa = 4.756) and 107.98 mL of 0.15 M…

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

Q: How many grams of dry NH,Cl need to be added to 2.00 L of a 0.800 M solution of ammonia, NH3, to…

A: Given, Concentration of NH3, [NH3] = 0.8 MVolume of solution, V = 2 LpH = 8.64Base dissociation…

Q: An analytical chemist is titrating 139.4 mL of a 0.7600M solution of isopropylamine ((CH3)₂CHNH₂)…

A: Volume of isopropyl amine solution=  139.4 mL  Molarity of isopropyl amine solution= 0.7600M…

Q: There is 1 L of a buffer solution consisting of 0.12 M lactic acid and sodium lactate 0.11 M. pka=…

A: Given -> Volume of buffer solution= 1 L Concentration of lactic acid=[Lactic acid] = 0.12 M…

Q: What is the pH of a buffer prepared by mixing 20.0 g of ethylamine, CH3CH2NH2, and 20.0 g of…

A: Given -> Weight of CH3CH2NH2 = 20.0 gm  Weight of CH3CH2NH3Cl = 20.0 gm Volume= 2.00 L

Q: Determine the pH of the buffer solution produced by the reaction of 5 mL 0.1 M KOH and 30ml 0.1…

A: Given that : Concentration of CH3COOH = 0.1M Volume of CH3COOH = 30mL = 30×10-3L Concentration of…

Q: What volume of 1.35 M HCI must be added to 0.264 L of 0.213 M dimethylamine to produce a buffer with…

A: We are asked to find the volume of 1.35 M HCl that must be added to 0.264 L of 0.213 M dimethylamine…

Q: A 1.00 L solution contains 19.52  g of nitrous acid, HNO2. What mass of sodium nitrite, NaNO2,…

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Q: buffer consists of 0.44 M NH3 and 0.25 M NH4CL (pKb of NH3 = 4.74). Calculate the pH after the…

A: Molarity is defined as number of mole of substance divide by volume of solution in liter

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

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Q: What change in pH will occur when 0.050 mmol of HOAC (Ka= 1.78 x 10³ ) is added to 100.0 mL of a…

A: Given: Concentration of HOAc in buffer = 0.1000 M Concentration of NaOAc in buffer = 0.1000 M Volume…

Q: Determine the volumes of 0.12 M CH3COOH and 0.15 M CH3COONa required to prepare 10 mL of the…

A: This can be solved from Henderson-Hasselbalch equation, pH = pKa + log10[salt][acid] Here,…

Q: A buffer consists of 0.25 M KHCO3 and 0.21 M K2CO3. Given that the K values for H2CO3 are, Ka1 = 4.5…

A: Given, 0.25 M KHCO3 0.21 M K2CO3 Ka1 = 4.5 x 10-7 and Ka2 = 4.7 x 10-11

Q: Complete the ICE table below to show the change occurring and calculate the equilibrium for the…

A: The equilibrium reaction occurring between A- and HA just after the addition of hydrogen ions is…

Q: Calculate the pH for a buffer made with 230.0 mL of 0.189 M furoic acid (HC5H3O3) and 20.0 mL of…

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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: Derive an equation similar to the Henderson–Hasselbalch equation for a buffer composed of a weak…

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Q: A benzoate buffer is prepared containing 0.33 M benzoic acid and 0.28 M benzoate. The Ka of benzoic…

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Q: A buffer is made up from 0.15 M acetic acid and 0.5 M sodium acetate. What is the pH of the buffer…

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Q: What change in pH will occur when 0.050 mmol of HOAc (Ka= 1.78 x 10^-5) is added to 100.0 ml of a…

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Q: Calculate the change of pH of a buffer system with a pH of 7.323 if 0.217 mol potassium hydroxide…

A: If 0.217 mole of NaOH was added to the system  pH = 7.323Volume of phosphoric acid  525 mL = 0.525 L…

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: Calculate the volume of sodium acetate (in mL) required to prepare 125.0 mL of a buffer with a final…

A: 0.450 M acetic acid and 0.450 M sodium acetate were used to prepare 70.0 mM of 125.0 mL buffer…

Q: A 20.0 mL sample of 0.150 M ethylamine is titrated with 0.0981 M HCI. What is the pH after the…

A: Given  mmoles of base = 0.15 M x 20 mL = 3 mmoles of acid = 0.0981 M x 5 mL = 0.4905…

Q: Calculate the pH of the solution that results from the addition of 0.040 moles of HNO3 to a buffer…

A: The Henderson Hasselbalch equation for acidic buffer is given as :

Q: Describe how to prepare 1.0L of 0.10M acetate buffer of pH=4.00, from given 0.10M solutions of…

A: The volume of acetic acid and acetate to be mixed is calculated as, pH = pKa + log ([A-]/[HA]) [A-]…

Q: A 1.0 L buffer solution initially contains 0.25 mol NH3 (Kb=1.8x10^-5) and 0.25 mol of NH4Cl. In…

A: First we would Calculate Initial pH of buffer using Henderson Hasselbalch equation.  Then we check…

Q: What volume of 1.35 M HCl must be added to 0.283 L of 0.323 M dimethylamine to produce a buffer with…

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Q: A buffer solution was made by dissolving 10 g of sodium acetate (CH3COONa) in 100 ml of 1.0 M Acetic…

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Q: A student was told to make a pH=10.0 buffer from NH3 and NH4Cl.  What concentration of NH3 and NH4Cl…

A: To make  a pH=10.0 buffer from NH3 and NH4Cl we first  Calculate the The Value of Pkb from given…

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: For HCN, Ka = 4.9 Î 10–10.  What is the pH of a buffer solution in which [HCN] = 1.00 M ,  [KCN] =…

A: pH of buffer solution is calculated by using Henderson Hessalbalch equation

Q: 2.80 g of sodium acetate, CH3COONa was dissolved in 150.0 mL of water, H2O. A solution of 0.025 M…

A: The pH of the mixed solution can be calculated by Handerson-Hasselbach equation.  pH = pKa + log…

Q: A hydrofluoric acid buffer is commonly used for systems that require a pH of about 3.00. Calculate…

A: The volume of buffer solution V = 100 mL Concentration of HF CHF = 0.14 M Concentration of KF CKF =…