1. Will a 5% preparation of caffeine citrate compounded in citrate buffer, pH 4.8 with no additional co-solvents be a solution – Yes or No? Explain. The MW of caffeine is 194.19 Da and that of caffeine citrate is 386.3 Da. The intrinsic solubility of caffeine is 2.17g/100 mL. please explain the answer.

Q: Calculate the molar solubility in pure water of the hypothetical compound, XY3 that has Ksp value of…

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Q: Buffers that are based on 3-morpholinopropanesulfonicacid (MOPS) are often used in RNA analysis. The…

A: The pH range of the buffer solution is 6.5 to 7.9 The pKa value gives us the idea of the acidic…

Q: The pH of the buffer

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Q: A chemistry graduate student is given 125. mL of a 1.50M trimethylamine ((CH3)₂N) solution.…

A: The concentration of trimethylamine =1.50 MThe volume of the solution = 125 mLThe pH of the solution…

Q: Direction: Solve for the pH or pOH of the following buffer solutions using the Henderson-Hasselbalch…

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Q: mine the pH during the titration of 39.3 mL of 0.315 M trimethylamine ((CH3)3N, K = 6.3×10) by 0.315…

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Q: Phosphoric acid is a triprotic acid (Kal 6.9 x 10-3, K2 = 6.2 × 10-8, and Ka3 = 4.8 x 10-13). To…

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Q: ›Determine the molar solubility (S) of Ag₂CO3 in a buffered solution with a pH of 5.619 using the…

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Q: What volume of 1.35 MHCI must be added to 0.287 L of 0.323 Mdimethylamine to produce a buffer with a…

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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: (j). An acetate buffer contains 50.0 millimolar (mM) acetic acid and 35.0 mM sodium acetate. (i)…

A: Here we are required to find the pH change when acid and Base are added to the buffer solution

Q: What is the pH of a solution containing 0.16 mol L-1 of HCI and 0.828 mol L-1 of a weak acid with…

A: Answer: In the presence of strong electrolyte having a common ion dissociation of weak electrolyte…

Q: 3. Calculate the (a) pH (b) pOH (c) percent ionizaton of 0.100 M ammonia. NH3 kb = 1.8x10^-5

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

Q: How many grams of potassium napthenate (KC11H7O2; MW=210.27 g/mole; Kb=85x10-10) must be added to…

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Q: he following text may be found at the ThermoFisher website: "PBS (phosphate buffered saline) is a…

A: Since the buffer solution is 1x concentrated it is not diluted.  Hence we have to use the…

Q: Consider the titration of 60.0 mL of 0.0400 M (CH3)2NH (a weak base; K = 0.000540) with 0.100 M…

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Q: 1.0-LL buffer solution initially contains 0.20 molmol of NH3NH3 and 0.20 molmol of NH4ClNH4Cl.…

A: The mass of correct reagent added

Q: What is the molar solubility of silver (I) sulfate (Ksp = 1.2 x10-5) when dissolved in 150 mL in…

A: The solubility reaction of Ag2SO4 i.e silver sulfate is given by  => Ag2SO4 (s) -------> 2 Ag+…

Q: What is the molar solubility of nickle sulfide, NiS, in (1.50x10^-1) M ammonia, NH3? Ammonia reacts…

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Q: Calculate the amounts of the following reagents that are needed to needed to prepare 250 mL of pH…

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

Q: 12:19 1 Jessica - Chemical Acid-Base Equilibria 回Q K = (b) Calculate the pH of 0.1mol dm potassium…

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Q: The pH of the buffer (4.32 mol acid component [Ka = 2.39 x 10-4] + 3.64 mol salt component) after…

A: pH of a buffer after addition of small amount of acid/base can be calculated as follows:

Q: In Protein Precipitation, two liters of 5mM buffer solution with pH 5.2 is needed in the isolation…

A: Buffers are solution that resists the change in pH when small amount of strong acid or base is added…

Q: sure to answer all parts. nicrobiologist is preparing a medium on which to culture E. coli bacteria.…

A: Given pH = 7She want to make 450 mL of pH We have to find volume of equimolar mixtures of H2 and…

Q: Please provide detailed solution and give the explanation of the concept

A: First, we need to calculate the pOH of the solution. The pH and pOH of a solution are related by the…

Q: For the titration of 50.00 mL of 0.300 M RbC7H5O2 (WB) with 0.200 M HNO3 (SA). Ka (HC7H5O2) = 6.3 x…

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Q: The solubility of CaCO3 is pH dependent. Calculate the molar solubility of CaCO3 (Ksp = 4.5 * 10-9)…

A: When sparingly soluble salt is dissolve in water most of the salt remain undissolved in the…

Q: Which of the following arrangements of these salts is in order of increasing solubility in water?…

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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: 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: Please don't provide handwritten solution ...

A: pH of the buffer solution will be 4.63 .Explanation:Benzoic acid (HC6H&CO2)  is a weak acid and…

Q: ind the number of grams of potassium hydroxide KOH that would have to be added to 140 mL of a 0.293…

A: Given data,Molarity of HNO2=0.293MVolume of HNO2=140mL=0.140LKa=6.0×10-4pH=3.45

Q: A student was given a solid containing a mixture of nitrate slats. The sample completely dissolved…

A: The objective of the question is to identify the possible nitrate salts present in the unknown…

Q: At room temperature, the solubility of bromine in bromoform is approximately 70 times greater than…

A: The amount of bromine that dissolve in bromoform is 70 percentage of the 0.006 g and the weight is…

Q: (3) How will you prepare 500 ml of 0.750 M citrate buffer with pH of 4.25 from solid citric acid…

A: Here we have to prepare  500ml of 0.750M citrate buffer from citric acid and sodium  citrate.  Ka =…

Q: A laboratory manager wants to prepare 1000.0 mL of a buffer with a pH of 4.696 from equimolar…

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Q: A 30 cm'aliquot of 0.075 M Sodium hydroxide (NaOH) is titrated against a standardised HCl solution…

A: Volume of NaOH (V1)= 30 cm3 = 30 ml (1 cm3 = 1ml) Molarity of NaOH (M1)= 0.075 M Volume of HCl = 0.1…

Q: How many grams of sodium acetate (salt) and acetic acid (acid) would be required to prepare 1 L of…

A: Here we are required to find the mass of sodium  acetate and acetic acid required to form buffer…

Q: What is the pH of a buffer that is 0.200M HC2H3O2 and 0.100M NaC2H3O2 (Ka =1.8 x 10-5).

A: The buffer system in this case is made up of acetic acid (HC2H3O2) and its conjugate base, the…

Q: Please provide detailed solution and give the explanation of the concept.... Please don't provide…

A: In this problem, you are tasked to create a buffer solution using dimethylamine(CH3)2NH), which is a…

Q: set to standardize a solution of Mg(OH)2 with potassium hydrogen phthalate (KHP, M.W. = 204.22…

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Q: What weights of citric acid and/or its various salts are required to prepare 2.0L of a K-citrate…

A: Given as the pH of buffer =6.25 ionic strength= 0.05 M H3C6O7H5                K1        =…

Q: At a certain temperature, nickel(II) hydroxide, Ni(OH)2, has a value of Ksp = 8.9 x 10-16. At this…

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Q: Please provide detailed solution and give the explanation of the concept

A: First, we need to calculate the pOH of the solution because we are given the pH and we are dealing…

Q: You need to prepare 100.0 mL of a pH 4.00 buffer solution using 0.100 M benzoic acid (pK₁ = 4.20)…

A: Given, Final Volume - 100 mL Desired pH - 4.00 pKa - 4.20 Strength of benzoic acid - 0.100 M…

Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.