A buffer solution contains 0.289 M KH2PO4 and 0.399 M K2HPO4. If 0.0485 moles of hydroiodic acid are added to 250. mL of this buffer, what is the pH of the resulting solution ? (Assume that the volume does not change upon adding hydroiodic acid)

Q: You add 5.00 mL of 0.100 M NaOH to 25.00 mL of pure water, and to this mixture you then add 10.00 mL…

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Q: A buffer solution contains 0.239 M acetic acid and 0.420 M potasslum acetate. If 0.0243 moles of…

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Q: A buffer solution is 0.409 M in H2SO3 and 0.311 M in KHSO3. If Kal for H2SO3 is 1.7 x 10-2, what is…

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Q: A buffer solution is 0.316 M in CH;COOH and 0.275 M in CH3COON . If K, for CH;COOH is 1.8×10³ , what…

A: Concentration of CH3COOH=0.316M Concentration of CH3COONa=0.275M Ka of CH3COOH=1.8×10^-5 pH=?

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 1.34 L buffer solution consists of 0.174 M butanoic acid and 0.250 M sodium butanoate. Calculate…

A: The pH scale is given by the scientist Sorensen in order to express the [H3O+] ion of a solution. It…

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 buffer solution contains 0.371 Mhydrocyanic acid and 0.449 M potassium cyanide. If 0.0218 moles of…

A: pH = pKa + log[salt]/[acid]

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: The Ką of acid HA is 3.5 x 10 and the Kp of base B is 7.2 x 104. When 0.50-mol HA and 0.50-mol B are…

A: Answer: greater than 7

Q: a. A buffer solution contains 0.387 M hydrocyanic acid and 0.409 M potassium cyanide. If 0.0293…

A: Given,  a) A buffer solution contains 0.387 M hydrocyanic acid and 0.409 M potassium cyanide.If…

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: 4. How many grams of sodium lactate, NAC3H5O3, should be added to 1.0OL of 0.150M lactic acid,…

A: To calculate the grams of sodium lactate , we would use Henderson Hasselbalch equation.

Q: Consider a buffer made with 3.4 mL of 0.35 M of a weak acid solution and 8.7 mL of 0.54 M solution…

A: given Ka = 9.3×10-4pKa = -log KapKa = -log  9.3×10-4pKa = 3.0315

Q: When 42.6 mL of 0.100 M Ba(OH)2 is mixed with 98.6 mL of 0.200 M HCI, the reaction goes to…

A: A numerical problem based on pH concept, which is to be accomplished.

Q: A solution is formed by adding 5.20 grams of solid potassium acetate, KC₂H₃O₂, to 500.0 ml of…

A: pH is negative logarithm of Hydrogen ion concentration

Q: How many moles of sodium hydroxide would have to be added to 225 mL of a 0.316 M acetic acid…

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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: The conjugate base, A⁻ of a certain weak acid, HA has the molar mass 67.997 g/mol. What mass of this…

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Q: An aqueous solution of 0.057 M weak acid, HX, has a pH of 4.65. What is the pH of the solution if…

A: A buffer solution is made with a weak acid and its conjugate base, such solution resist the change…

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: A buffer solution contains 0.476 M ammonium bromide and 0.339 M ammonia. If 0.0340 moles of…

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Q: The mixture of 100.0 mL of 0.100 M NaOH (aq) and 100.0 mL of 0.300 M CH3COOH (aq) will result in a…

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Q: A buffer solution contains 0.436 M KH,PO4 and 0.317 M K,HPO4. If 0.0156 moles of sodium hydroxide…

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Q: A buffer solution contains 0.444 M NaHSO3 and 0.246 M K2SO3. If 0.0239 moles of potassium hydroxide…

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Q: When 32.3 mL of 0.100 M Ba(OH)2 is mixed with 197.2 mL of 0.200 M HCl, the reaction goes to…

A: The reaction result in the formation of Barium chloride. The pH of a solution is the negative…

Q: The pH of 300 mL solution made of 0.93 M acetic acid and 1.07 M potassium acetate is (K, = 1.8 x…

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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: A buffer solution contains 0.227 M ammonium chloride and 0.450 M ammonia. If 0.0418 moles of nitric…

A: A solution of ammonium chloride in ammonia is a buffer solution of a weak base and the salt of its…

Q: A buffer is made by adding solid sodium citrate (Na3C6H5O7) to a solution of 1.20 M-Na2HC6H5O7. The…

A: Na2HC6H5O7 is a weak acid with pKa value of approximately 6.39 Na3C6H5O7 is the conjugate base of…

Q: How many moles of sodium hydroxide would have to be added to 125 mL of a 0.376 M hydrocyanic acid…

A: Ka of HCN = 6.2 × 10-10 pka = -log(ka) = 9.2

Q: 12.0 g of sodium acetate is added to 125 mL of a 0.83 M acetic acid solution. What is the pH of this…

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

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 = ?

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: A buffer solution is composed of 1.923 g of KH,PO4 and 4.699 g of Naz HPO4. (K, for dihydrogen…

A: The pH of this buffer solution would be calculated using Henderson-Hassalbalch equation .

Q: A buffer solution contains 0.386 M KHCO3 and 0.312 M Na,CO3. If 0.0356 moles of hydrobromic acid are…

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Q: What volume of 0.500 M HNO2 should be added to 500 mL of 0.750 M KNO2, so that the pH of the…

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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: A buffer solution contains 0.268 M ammonium chloride and 0.311 M ammonia. If 0.0169 moles of…

A: Given -> Molarity of NH4Cl = 0.268 M Molarity of NH3 = 0.311M Moles of HI = 0.0169 mole Volume of…

Q: A buffer sSolution contains 0.388 M ammonium bromide and 0.290 M ammonia. If 0.0311 moles of sodium…

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Q: A buffer solution contains 0.415 M acetic acid and 0.350 M sodium acetate. If 0.0412 moles of…

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Q: A buffer solution contains 0.306 M KHSO3 and 0.376 M Na2SO3. If 0.0398 moles of nitric acid are…

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Q: How many moles of sodium hydroxide would have to be added to 225 mL of a 0.332 M hydrocyanic acid…

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Q: How many moles of sodium hydroxide would have to be added to 150 mL of a 0.479 M hypochlorous acid…

A: The reaction between the sodium hydroxide and hypochlorous acid as shown below. At standard…

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.