What is the pH of a buffer prepared by mixing 100 mL 0.050 mM NaH2PO4 and 25 mL 0.075 mM Na2HPO4? (pKa1=2.2; pKa2= 7.21; pKa3=12.7) Please show step by step solution.

Q: Calculate the pH at 25°C of 290.0 mL of a buffer solution that is 0.310 M  NH4Cl and 0.310 M  NH3…

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Q: Calculate the pH at 25°C of 239.0 mL of a buffer solution that is 0.300 M  NH4Cl and 0.300 M  NH3…

A: Given,Molarity of NH3 = 0.300 MMolarity of NH4Cl = 0.300 MVolume of the buffer solution = 239.0…

Q: You need to make 1.0 L of a bu CH3COOH and NaCH3COO answers with reasonable ratio Ka for CH3COOH =…

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Q: Calculate the pH at 25°C of 291.0 mL of a buffer solution that is 0.310 M  NH4Cl and 0.310 M  NH3…

A: Buffer solution :  It is a special type mixture of weak acid or base and its conjugate salt. The…

Q: Phosphoric acid is a triprotic acid with the p?a values p?a1=2.148, p?a2=7.198, and p?a3=12.375.…

A: Ionization of phosphoric acid is,

Q: Question 21 Saved Calculate the stoichiometric concentrations of HAc and Ac" in Solution D, after…

A: This question is related to Buffer solution and its pH value alteration on addition of NaOH. This…

Q: Suppose that a 1000 mL buffer (pH=5) solution will be prepared using 2.6g C6H5COOH (its Ka is…

A: Molecular weight of C6H5COOH = 122  So, 2.6 g of C6H5COOH = 2.6122mole = 0.021 mole Thus,…

Q: Calculate the pH at 25°C of 183.0 mL of a buffer solution that is 0.230 M  NH4Cl and 0.230 M  NH3…

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

Q: A 50.00-mL sample of a 1.00 M solution of the diprotic acid H2A (Ka1 = 1.0 × 10–6 and Ka2 = 1.0 ×…

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Q: Cacodylic acid (dimethylarsinic acid, (HAsO2(CH3)2) is a common buffer used in biology to prepare…

A: Given that, a buffer solution is prepared by mixing 10.0 ml of 0.200 M NaOH with 20.0 ml of 0.150 M…

Q: Calculate the pH of buffer system with 0.25 M C6H5NH3 and 0.31 M C6H5NH3+.Ka of anilinium ion = 2.5…

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Q: 12. What volume (in mL) of a 0.150 M Na2SO3 solution must be added to 20.0 mL of a 0.120 M NaHSO3…

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Q: How many moles of B (weak base) would need to be added to 507 mL of 0.28 M BHCl (the acidic salt) to…

A: IMPORTANT POINTS: It is the case of basic buffer containing a weak base and its conjugate salt BHCl…

Q: 3) Calculate the pH after titration of 30.00 mL of 0.10 M HOCl solution (ka=2.9x10^-8) with 25.00 mL…

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Q: Pyrazolium Chloride is a weak acid (C3H4N2HCl; Ka=1.4x10-3). How many grams of Pyrazole (conjugate…

A: Given: Ka of C3H4N2HCl = 1.4 X 10-3  Concentration of C3H4N2HCl = 0.3 M And pH of buffer solution =…

Q: Calculate the pH of a buffered solution that is prepared by dissolving 0.3mol of NaHCO3and 0.45mol…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: of m-chlorobenzoic acid, HC7H4CIO2, is 1.5x 10-4. (a) Suppose buffer #1 is prepared using 40.0 mL…

A: The Henderson-Hasselbalch equation for the acidic buffer solution is: pH=pKa+logsaltacid ......(1)

Q: How much (in grams) Na2HPO4 must be added to 100 mL 1.0 M NaH2PO4 solution to prepare a buffer…

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Q: Calculate the pH of a buffer solution that prepared by dissolving 0.025 mole of CH3COOK and 0.020…

A: To calculate the pH of buffer solution use formula which is given below. pH=pKa+log[Salt][Acid] Here…

Q: Imidazole (C3H4N2, MW = 68.07816, Kb = 9.80 x 10–8) can be used to create buffers at physiological…

A: Buffer are solution which resist change in PH when acid Or base are added

Q: Calculate the hydronium ion concentration for a buffer solution that is 2.0 M in maleic acid (H2M)…

A: pH = pKa1 + log salt / acid  pH = 2 - log 1.2  + log 1.5 / 2  pH = 1.8

Q: What is the pH of the buffer that results when 12.3 g of NaH2PO4 and 7.79 g of Na2HPO4 are diluted…

A: Given: Mass of NaH2PO4 = 12.3 g Mass of Na2HPO4 = 7.79 g Molar mass of NaH2PO4 = 120.0 g/mol Molar…

Q: Which of the following combination can be used to prepare a buffer with a pH of 7?     K2HPO4 and…

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Q: Q2.9 What would be the pit of a buffer that is composed of mh of 0.10 M CH3COONa? and 125 92 mL of…

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Q: Calculate the pH of a buffered solution that is prepared by dissolving 0.3mol of NaHCO3 and 0.45mol…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: An enzymatic reaction is run in 5.00 mL of 10.0 mM TRIS-HCl buffer at pH 7.82. If during  the course…

A: Given the initial pH of the buffer = 7.82  Ka of TRIS-HCl = 8.32*10-9  Final pH after reaction =…

Q: Suppose 85 mL of a buffer solution that was 0.15 M HCHO2 and 0.25 M NaCHO₂ had 7.5 mL of 0.10 M…

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Q: the pH of an acetate buffer prepared by dissolving sodium acetate (5.21 g) and acetic acid (2.19 g)

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Q: 4) Calculate how much you need to take from each solution to prepare 1 L of buffer solution with a…

A: To prepare a buffer , HCl should be a limiting reagent.

Q: What is the resulting pH if 2.0 mL of a 100 mM HCl solution is added to 100 mL of a 10.0 mM solution…

A: HCl is strong acid and phosphoric acid is weak acid with the formula H3PO4. H3PO4 is a tribasic…

Q: 10) An aqueous solution has [HC/H5O₂) = 0.100 M and (Ca(CzHsO₂)2] = 0.200 M. K. = 6.3 x 105 for…

A: Given,Molarity of HC7H5O2 = 0.100 M Molarity of Ca (C7H5O2)2 = 0.200 MVolume of the solution = 5.00…

Q: (1). What will be the pH when 50.0 ml of 2.00 M carbonic acid is mixed 20.0 ml of 3.00 M sodium…

A: #1:  Given the volume of 2.00 M carbonic acid, H2CO3 = 50.0 mL * (1L/1000 mL) = 0.050 L => moles…

Q: Determine the pH of the buffer solution prepared by adding 40.0 mL 0.200 M H3PO4 and 50.0 mL  0.300…

A: H3PO4 is a triprotic weak acid with pKa1 = 2.10, pKa2 = 7.20, pKa3 = 12.0 NaOH is a monoacidic…

Q: A 50.00-mL sample of 0.250 M HC2H3O2 was titrated with 0.125 M NaOH. What is the pH of the resulting…

A: we have to calculate the pH of solution

Q: A 100 mL buffer solution that is pH 8.06 buffer is prepared by first adding 0.45 grams of RNH2…

A: pH of a basic buffer = 14 - pOH  pOH = pKb +log [Conjugate acid][base] M1V1 = M2V2 (Dilution law)…

Q: Calculate the sodium acetate/acetic acid ratio to prepare a buffered solution with a pH of 5.06.…

A: The ratio can be found by using Henderson-Hasselbach equation: pH = pKa + log[salt][acid]…

Q: 6. How many grams of NazHPO, *2 H20 (177.99 g/mol) should be added to 500 mL of 0.5 M H3PO4 to give…

A: H3PO4 and Na2HPO4 will make buffer solution of the combination of weak acid and weak base.

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.