Muscle physiologists study the accumulation of lactic acid [CH₃CH(OH)COOH] during exercise. Food chemists study its occured in sour milk, beer, wine, and fruit. Industrial micro-biologists study its formation by various bacterial species from carbohydrates. A biochemist prepares a lactic acid–lactate bufferby mixing 225 mL of 0.85 M actic acid (Ka=1.38X10⁻⁴) with 435 mL of 0.68 M sodium lactate. What is the buffer pH?

Q: What is the pH of a buffer that is composed of 121 mL of 0.10 M CH3COOH and 81 mL of 0.10 M…

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Q: You are asked to prepare a buffer solution with pH 5.10. If you start with a solution containing…

A: Answer: Part A) 22.6 mmol CH3COONa                 Part B) 151 ml

Q: A sample of acetic acid is titrated with a standardized NaOH solution. Beyond the end-point of the…

A: The titration reaction taking place is given as, => NaOH (aq) + HC2H3O2 (aq) -------->…

Q: Scenes A to D represent tiny portions of 0.10 M aqueous solutions of a weak acid HA (red and blue;…

A: (a) Scene B shows a buffer because it contains both the weak acid HA and its conjugate base A⁻ in…

Q: Consider a buffer made by adding 132.8 g of NaC₇H₅O₂ to 300.0 mL of 2.31 M HC₇H₅O₂ (Ka = 6.3 x 10⁻⁵)…

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Q: A beaker with 2.00×10² mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The…

A: Henderson-Hasselbalch equation is used for the pH of buffer solution. pH =pKa +log[CH3COO-][CH3COOH]…

Q: What is the [H3O+] and the pH of a benzoic acid-benzoate buffer that consists of 0.12 M C6H₂COOH and…

A: Recall the data from the question, Molarity of C6H5COOH=0.12 M Molarity of C6H5COONa=0.43 M Ka of…

Q: Phosphate systems form essential buffers in organisms. Calculate the pH of a buffer made by…

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Q: A lactic acid/sodium lactate (HC3H5O3/NAC3H5O3) buffer is prepared to 0.104 mol L-1 HC3H5O3 and…

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Q: The pH of a 0.30 M NH3 / 0.36 M NH4Cl buffer solution is 9, 17. what is the pH after the addition of…

A: Step 1: Given[NH3] = 0.30 M[NH4Cl] = [NH4+] = 0.36 MVolume of buffer = 80 mL = 0.080 LpH = 9.17pKb =…

Q: A buffer is prepared such that [CH3COOH]0 = [CH3COO−]0 = 0.050 M. Calculate the volume of 0.10 M…

A: Buffer capacity is used to determine the buffer solutions resistance to changes in pH when a strong…

Q: A chemistry graduate student is given 250.mL of a 0.30M chloroacetic acid HCH2ClCO2 solution.…

A: Given a question related to the calculation of the mass of salt,  KCH2ClCO2 required to prepare the…

Q: A chemistry graduate student is given 250.mL of a 0.90M diethylamine ((C_2H_5)_2NH) solution.…

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Q: A buffer is prepared by adding 1.00 L of 1.0 M HCl to 750 mL of 1.5 M NaHCOO. What is the pH of this…

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Q: Be sure to answer all parts. What is the [H3O+] and the pH of a benzoic acid-benzoate buffer that…

A: Thank you.

Q: What is the hydronium-ion concentration in a solution resulting from mixing 133 mL of 0.100 M HCN…

A: Answer:- This question is answered by using the simple concept of calculation of hydronium ion using…

Q: What will be the pH of the solution prepared by dissolving 8.35 g of aniline hydrochloride (C6H5NH3…

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Q: A buffer is prepared such that [CH3COOH], = [CH3C00-lo = 0.050 M. Calculate the volume of 0.10 M…

A: Millimoles of Acetic acid = M x V   = 0.050 x 100.0  = 5.0 mmol = Millimoles of sodium acetate  Let…

Q: Lactic acid, (CH3CH(OH)COOH) is a common biomolecule which can accumulate inmuscles during intense…

A: The objective of this question is to calculate the pH of a buffer solution prepared by mixing lactic…

Q: Calculate the pH of a buffer solution composed of 0.12 m benzoic acid and 0.20 m sodium benzoate.…

A: The pH of the buffer solution is determined by Henderson equation, pH=pKa+log[base][acid]

Q: A buffer solution is made that is 0.319 M in HCN and 0.319 M in NaCN. (1) If Ka for HCN is…

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Q: What is the pH of a buffer

A: Buffer is a solution of weak acid and base. the pH of buffer can not changes with addition or acid…

Q: What is the pH of a buffer prepared by adding 0.607 molof the weak acid HA to 0.609 molmol of NaA in…

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Q: I have a buffer solution that consists of 0.200M benzoic acid, and 0.220M sodium benzoate. If the Ka…

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

Q: Calculate the pH of a buffer solution that is 0.41 M in HOCl and 0.50 M in NaOCl. [Ka(HOCl) = 3.24 x…

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Q: How many milllilitres of HCl should you add to 250.00mL of 13.4 x 105 ppm sodium maleate to produce…

A: We have to find the volume of HCl such that we get pH = 3.37  Given 250.00mL of 13.4 x 10⁵ ppm…

Q: The following diagrams contain one or more of the compounds: H,A, NaHA, and Na A, where H2A is a…

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Q: 20.0 mL of 0.075 M aqueous solution of lactic acid CH3CH(OH)COOH, a monoprotic acid, is titrated…

A: volume of NaOH at equivalence point  pH at equivalence point  pH after adding 5.0 mL of NaOH

Q: A certain indicator, HA, has a ?a value of 7.9×10^−7. The protonated form of the indicator is yellow…

A: The question is based on the concept of equilibrium. we have been given dissociation constant of the…

Q: The pH of a bicarbonate-carbonic acid buffer is 6.18. Calculate the ratio of the concentration of…

A: The ratio of [H2CO3] to that of [HCO3-] is determined by using Henderson-Hasselbalch equation.

Q: 1.0mL of 6.0M HCl is added to 100mL of a buffer that contains equal moles of acetic acid (CH3COOH,…

A: Initial pH of the buffer containing equal moles of acetic acid and sodium acetate can be given as:…

Q: 6. A buffer solution contains 0.1OM benzoic acid (C,H5COOH, Ka = 6.3 x 10) and 0.10M potassium…

A: pH can be calculated by using henderson equation  pH = pka + log (salt/ acid) Pka = - log 6.3 x10-5…

Q: 8. b) Calculate the pH of a buffer that was prepared by mixing 45 mL of 0.01M aqueous hydrocyanic…

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Q: Calculate the pH of a buffer solution made by mixing 163.9 mL of a 1.05 M propanoic acid…

A: The objective of this question is to calculate the pH of a buffer solution made by mixing propanoic…

Q: Calculate the pH of a buffer solution that contains 0.25 M benzoic acid (C,H5CO2H) and 0.15M sodium…

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Q: 100.0 ml of a 0.3 M solution of an unknown monoprotic weak acid has a Ka=1x10-6.  What mass of NaOH…

A: Volume of weak monoprotic weak acid = 100ml Molarity of weak monoprotic weak acid = 0.3M Ka = 1 x…

Q: RT 4: a) When a strong base is added to a buffer it will react to become neutralized. Determine the…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A 80.00 mL solution initially contains 0.300 M HCN and 0.200 M KCN. What is the new pH after 1.0 mL…

A: To find the new pH after adding 1.0 mL of 2.5 M HCl to the solution, we need to consider the effect…

Q: Aspirin (C 9H 8O 4) is a weak monoprotic acid (K a = 3.3 x 10-4). You are analyzing a sample for a…

A: The question is based on the concept of pH of the solution.  It is defined as a negative logarithm…

Q: True or False: NaBr can never be the salt of a buffer. http://www.sciencegeek.net/tables/ka.shtml O…

A: As per bartleby guidelines I answered only first question so please don't mind.Thanks in advance.

Q: A 52.0-mL volume of 0.35 M CH3COOH (Ka=1.8×10−5) is titrated with 0.40 M NaOH. Calculate the pH…

A: Given: Volume of acetic acid  = 52.0 mL Molarity of acetic acid = 0.35 M Ka for acetic acid…

Q: buffer consists of 0.30 M ethylamine (C2H5NH2) and 0.40 M C2H5NH3Cl. What is the pH after 5.04 g of…

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Q: What mass (in grams) of potassium acetate, KC2H302, must be added to 145 ml of 0.010 M acetic acid…

A: Given  PH = 4.67  Ka  = 1.8 × 10-5 Molarity of acetic acid = 0.010 M Mass of potassium Acetate = ?

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.