If a buffer solution is made of 12.2 g of benzoic acid (C6H5COOH) and 7.20 g of sodium benzoate (C6H5COONa) in exactly 250 mL of solution, what is the pH of the buffer?  If the solution is diluted to exactly 500 mL with pure water, what is the new pH of the solution?

Q: 3.28 g of sodium acetate (82 g/mol) added to 400 mL of acetic acid to produce a buffer solution that…

A: Moles of sodium acetate = mass/molar mass  = 3.28/82 = 0.04 mol Let molarity of acetic acid = M…

Q: A 5.36 g sample of NH4Cl was added to 25.0 mL of 1.00 M NaOH and the resulting solution diluted to…

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Q: A buffer is prepared by dissolving 0.80 moles of NH3 and 0.80 moles of NH4Cl in 1.00 L of aqueous…

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Q: A chemistry graduate student is given 450. mL of a 1.80M nitrous acid (HNO, solution. Nitrous acid…

A: Given data: The volume of buffer = 450 mL = 0.45 L. The concentration of HNO2 [HNO2] = 1.80 M. The…

Q: A buffer solution is prepared by dissolving 1.000 g of sodium acetate (CH3COONa) into 100.00 mL of a…

A: On dissolving 1.00 g of sodium acetate (CH3COONa) to 100.00 mL solution, concentration of CH3COONa…

Q: 100.0 mL solution of 0.125 mol/L Hydrobromic Acid, HBr, is being titrated with 0.375 mol/L Potassium…

A: Given HBr (aq) + KOH (aq)  ->  KBr (aq) + H2O(l) Volume of HBr = 100 ml Molarity of HBr = 0.125 M…

Q: A buffer is made by dissolving 10.5 g of sodium dihydrogen phosphate, NaH2PO4 and 12.0 g disodium…

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Q: 40.0 mL of 0.20 M benzoic acid and 60.0 mL of 0.10 M sodium benzoate are combined in a large flask…

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Q: You are working in the laboratory and your manager asks you to prepare a 1 M sodium acetate buffer…

A: You are working in the laboratory and your manager asks you to prepare a 1 M sodium acetate buffer…

Q: solution is prepared by mixing 500 mL of 0.1 M HNO3 with 500 mL of 0.1 M Ca(OH)2. What is the pH of…

A: We will calculate pH by the help of given information

Q: A buffer solution contains 0.420 M NaHCO3 and 0.262 M Na2CO3. If 0.0303 moles of potassium hydroxide…

A: Initially, the solution contains a weak acid (NaHCO3) and its salt with a strong base (Na2CO3).…

Q: A buffer solution contains 0.447 M hypochlorous acid and 0.236 M potassium hypochlorite. If 0.0335…

A: Given the molarity of hypochlorous acid, HClO = 0.447 M Molarity of sodium hypochlorite, NaClO =…

Q: 56. What is the number of moles of HCI contained in the 12-mL solution added? 57. What is the number…

A: Please find the attachment.

Q: A buffer, consisting of H2PO4- and HPO42-, helps control the pH of physiological fluids. Many…

A: The mass of NaH2PO4 is 6.5 g. The mass of Na2HPO4 is 8.0g. The Volume of the solution is 355 mL. We…

Q: Sodium benzoate, NaC6H5COO (molar mass 144.1 g mol-1) is a common food preservative. The Ka of…

A: Given data, Ka of Benzoic acid = 1.6 x 10-5 Molarity of HCl = 1.20 M Molar mass of sodium benzoate =…

Q: What happens to the pH of the wateras you add drops of the acid solution and what is the chemical…

A: We are given two different substances, one is a non-buffer solution(water) and the other is a buffer…

Q: 0.00 mL buffer is prepared by dissolving 1.22 grams benzoic acid (pKa = 4.20, Molar Mass, μ = 122…

A: The pH of a buffer solution is given by-pH=pKa+log10saltacidmoles of benzoic acid=1.22g122g/mole0.01…

Q: How do buffer solutions prevent drastic pH changes when a strong acid is added? When a strong base…

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Q: A mixture of ascorbic acid (C6H,06H, Ka = 6.8 x 105) and sodium ascorbate is prepared such that…

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Q: You have two different concentrations of a buffer solution, 2.0 M and 0.20 M, to which 0.01 mol HCl…

A: Given: You have two different concentrations of a buffer solution, 2.0 M and 0.20 M. And moles of…

Q: What is the pH of a boric acid buffer solution containing 0.25 mol/L of boric acid, H3BO3, and 0.50…

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Q: A solution is formed by adding 3.20 grams of solid sodium hypochlorite, NaClO, to 500.0 ml of…

A: Answer: Solution will be basic due to hydrolysis of hypochlorite ion because it is the conjugate…

Q: If equal volumes of 0.29 M acetic acid and 0.12 M sodium hydroxide are mixed, what is the pH of the…

A: Henderson–Hasselbalch equation, pH = pKa + log [salt]/[acid]

Q: A buffer is prepared by mixing 50.0 mL of a 0.150 M sodium formate (NaHCO2) solution with 50.0 mL of…

A: Given : Concentration of NaHCO2 = 0.150 M Volume of NaHCO2 solution = 50.0 mL = 0.050 L…

Q: You are working in a lab and someone has just handed you a beaker filled with 110 ml of a mysterious…

A: pH of a buffer is calculated using Hasselbach Henderson equation: pH =pKa+log([Conjugate…

Q: A buffer solution is composed of 0.12 M CH3OOH and 0.11 M CH3COONA а.) What is the pH of this…

A: NOTE: please note according to our policy , we can only answer first three subparts of a question.…

Q: A buffer solution contains 0.345 M NaHSO3 and 0.430 M Na,SO3. If 0.0273 moles of perchloric acid are…

A: We will use buffer equation

Q: A buffer solution contains 0.345 M KH,PO4 and 0.491 M Na HPO4. If 0.0261 moles of hydrobromic acid…

A: KH2PO4 and Na2HPO4 forms a buffer solution. When HBr is added to the solution, the net ionic…

Q: Sodium benzoate, the sodium salt of benzoic acid, is used as a food preservative. A sample…

A: moles of HCl added = molarity x volume in mL                                 = 0.5 M x 50 ml = 25…

Q: A buffer solution contains 0.222 M hypochlorous acid and 0.318 M sodium hypochlorite. If 0.0380…

A: Given buffer solution contains:  0.222 M hypochlorous acid(HClO) and 0.318 M sodium…

Q: 6.) A 25.00-mL sample of HCI is titrated with 0.1001 M NaOH, 49.90 ml of base is required to reach…

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Q: a) A buffer solution is prepared by adding 55 mL of a 0.095 M solution of potassium benzoate,…

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Q: Consider a buffer solution containing an acid with a pKa of 2.3 and an acid concentration that is…

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Q: A buffer solution contains 1.7 M acetic acid and 2.6 M sodium acetate. The Ka of acetic acid is 1.8…

A: PH of the solution will be 4.97 .

Q: A buffer solution is 0.389 M in H3PO4 and 0.351 M in NaH PO4. If Kal for H3PO4 is 7.5 x 10°, what is…

A: The given data is as follows:  The concentration of H3PO4 = 0.389 M The concentration of NaH2PO4 =…

Q: A buffer solution is prepared by dissolving 1.000 g of sodium acetate (CH,COONA) into 100.00 mL of a…

A: The pH of the solution after adding HCl is 0.987

Q: A buffer solution contains 0.254 M NaHSO3 and 0.348 M Na2SO3. If 0.0285 moles of hydroiodic acid are…

A: A buffer resists a considerable change in pH when a small amount of acid or base is added to it. The…

Q: The pH of a 1.00 M NaCH3COO (aq) solution is 9.38. a) HCl (aq) is added to 1.00 L solution of 1.00…

A: The buffer solution is the solution that resists changes in the pH of the solution when a small…

Q: A chemistry graduate student is given 500. mL of a 1.80M hydrocyanic acid (HCN) solution.…

A: First to calculate the moles Then using formula to calculate mass of KCN.

Q: Which of the following aqueous solutions are good buffer systems? 0.40 M nitrous acid + 0.21 M…

A: A buffer is a solution that with the inclusion of acidic or critical components will resist the pH…

Q: A buffer solution contains 0.254 M NaHSO3 and 0.348 M Na2SO3. If 0.0285 moles of hydroiodic acid are…

A: Calculate the initial pH of the given buffer solution using Henderson-Hasselbalch equation,

Q: How does a buffer solution prevent larger change in pH? What does it mean when a solution has…

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Q: Explain the Buffer Range and Buffer Capacity?

A: Buffer range : pH range in which buffer solution can resist the change in pH effectively is known as…

Q: 0.020 mol of solid NaOH to 1.0 L of the solution?

A: Moles of CH3COOH = M × V(L)      = 0.50 × 1.0 = 0.50 mol Moles of CH3COONa = 0.50 × 1.0    = 0.50…

Q: What is the pH of a buffer solution that is 0.24M NH3 and 0.20M NH4Cl?

A: Given,Concentration of NH3 = 0.24 MConcentration of NH4Cl = 0.20 MAmmonia (NH3), is a weak base with…

Q: A 50.0-mL sample of 0.50 M HCl is titrated with 0.50 M NaOH. What is the pH of the solution after…

A: We have given that  Concentration of HCl = 0.50 M and Volume = 50 mL = 0.05 L Concentration of NaOH…

Q: You are asked to prepare a buffer solution with a pH of 3.50. The following solutions, all 0.100 M,…

A: A buffer works well in the pH range of (+/-)1 of the pKa of the weak acid used in the buffer. Closer…

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.