sodium hypochlorite (NaOCl) was dissolved in a solution buffered to pH = 6.20 . find the ratio (OCl-/HOCl) in this solution . pKa = 7.53

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Q: A 0.100 g of Sodium acetate was dissolved in 50 mL D.I water and titrated with 0.055 M HCl.…

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Q: In a reaction 45.0 mL of 0.3M of HC2H3O2 is titrated with 0.2M KOH solution. Ka= 1.8x10^-5 1) what…

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Q: An unknown volume of 2.50 M H2SO, was diluted to 50 ml using water. The diluted solution was…

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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: 1.Calculate the change in ph when 5ml of 1M HCl solution is added to 1L of 100mM Tris solution at ph…

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Q: consider titration of 50ml of 0.217M NH3 , ka= 2.6*10^-5 with 0.183M NaOH calculate pH of solution…

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Q: 0.178 L of aqueous HCl solution of unknown concentration was titrated with 0.825 M KOH (aq). 68.4 mL…

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Q: A 25.00 mL sample of methanoic (HCHO2, Ka = 1.8 x 10-4) is titrated to the equivalence point using…

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Q: A solution of nitrous acid (0.162 M, 23.82 mL) was titrated with 0.124 M sodium hydroxide (Ka = 4.00…

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Q: 6.2 ml of 0.34 M Ba(OH)2 was titrated with 30.0 ml of HCI, what is the concentration of HCI ? 2HCI +…

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Q: 1. A 0.0450 M Ca(X)2 has a pH of 11.079. Ca(X)2 is composed of a Ca²+ cation and an unknown anion X,…

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Q: A 50.0 mL sample of 0.050 M ammonia is titrated with 0.050 M HBr.  Determine the pH of the solution…

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Q: Determine the pH of a solution containing 0.110 M of Fe(NO3)3 given the Ka for Fe^3+= 6.3×10^-3.pH=

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Q: A 25.0 ml sample of 0.100 M lactic acid (weak acid) (HC3H5O3, Pka-3.86) is titrated with 0.100M NaOH…

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Q: What is the molar solubility of Mg(OH)2 in a basic solution with a pH of 12.00? Ksp for Mg(OH)2 is…

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Q: Use activity coefficients to calculate the pH after 10.0 mL of 0.110 M trimethylammonium bromide…

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Q: The Zn in a 260-g sample of foot powder was titrated with 2 L of 0.5 M EDTA. Calculate the percent…

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Q: Calculate the % change in pH  when 3.096 g of solid NaOH (39.997 g/mol) is added to a 318 mL buffer…

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Q: A 50.0 mL solution of Ca(OH)2 with an unknown concentration was titrated with 0.340 M HNO3. To reach…

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Q: a. Calculate the pH of a saturated solution of Ba(OH)2. Ksp = 5.0 x 10-3 pH = b. Calculate the pH of…

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Q: The KSP of magnesium hydroxide is 1.20 x 10-11. What is the pH of a saturated solution at…

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Q: Consider the titration curve for the titration of 1.0 L of 1.00 M H3ASO4 with 1.00M NAOH. What is…

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Q: Which of the following weak acids when paired with its conjugate base would be the best choice for a…

A: Given group of answer choices : a). HClO: pKa = 7.54 b). C5H4NH+: pKa = 5.25 c). HNO2: pKa =…

Q: A saturated solution of magnesium hydroxide, Mg(OH)2, has a pH of 10.42 at 25oC. Calculate the Ksp…

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Q: )A solution made by dissolving 7.40 g of potassium hypochlorite (KClO) into 1.50 L of solution.…

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Q: Acetic acid (pKa = 4.75) is contained in vinegar.  1. Calculate the pH of an 0.1500 M aqueous…

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Q: 1. Calculate the [H+] and the pH of a buffer solution that is 0.10 M in CH3COOH (Ka = 1.8 x 10-5)…

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Q: An EDTA solution is standardized against 0.3982 g of 99.99% CaCO3 (100.09 g/mol) dissolved in HCl…

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Q: Standardization of 0.10 M HCl 1. Take three (3) clean and properly labeled 250-mL Erlenmeyer flasks.…

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

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Q: 0.316 grams of a sample containing chloride is taken and treated with an excess of 48.5 mL of 0.11 M…

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