Chemistry To make a buffer that is 0.35 M EDTA and 0.1 M NaCl, calculate the amount of EDTA (F.W. 372.2) and NaCl (F.W. 58.44) needed to make 850 ml of this buffer.
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- Chemistry A 20 mL solution containing both Ca2+ and Mg2+ cations is diluted in to 100 mL. When 10 mL of this solution is taken and titrated with 0.05 M EDTA at pH = 10 in the presence of Erio – T indicator, the consumption is found as 12 mL. A new 10 mL was taken from the same solution and (NH4)2C2O4 is added on it and then formed the precipitate is filtered. The filtered solution is titrated with the same EDTA solution and the consumption is found as 3 mL. So find the Ca2+ and Mg2+ amounts in the main sample solution in terms of mg/L.A 250.00 mL solution of 0.00215 M AB4 is added to a 230.00 mL solution of 0.00380 M C3D2. What is pQsp for A3D4? Answer: (18.607)A buffer is prepared by mixing 25.0 mL of 0.296 M HBrO (pKa= 8.55) solution and 50.0 mL of 0.186 M NaBrO solution. What is the pH following the addition of 7.50 mL of 0.652 M HBr to this buffer? Please explain, correct answer and typed answer only no copy paste please
- A 370.00 mL solution of 0.00185 M A3B4 is added to a 390.00 mL solution of 0.00100 M C3D4. What is pQsp for A3D4?What is the component concentration ratio, [Pr−]/[HPr], of a buffer that has a pH of 4.98?(Ka of HPr = 1.3 × 10−5) Report your answer to 3 significant figures.A solution contains 3.913g trichloroisocyanuric acid dissolved in 800mL citrate buffer with a pH of 12.5. How much 1M NaOH do you add to raise the solution's pH to 12.5? Please show detail, thank you.
- A buffer was prepared by mixing 700 ml of .70M lactate solution and 800 ml of a .40 M lactic acid solution. what is the pH buffer, assuming a final volume of 800 mL. the pka for lactic acid is 3.97.show detailed solution.If a water has a carbonate alkalinity of 120.00 mg/L as the ion and a pH of 10.30, what is the bicarbonate alkalinity in mg/L as the ion? The answer is HCO_3=130.686 or 130.7 mg/LPlease do explain the stepsWhat volume of 0.50 M HNO3 should be added to 200ml of 0.20 M NH3 in order to creater a buffer with pH 9.00?. pKb(NH3)= 4.75. Express answer in two significant figures
- Standard oxylate solution used to standardize KMnO4 was prepared by dissolving 3.299g of Na2C2O4 in 1.000L of water containing H2SO4. add 25mL aliquot of the Na2C2O4 solution required 28.39 mL of KMnO4 for titration. A blank titration of 25mL of water containing H2SO4 required 0.03 mL of KMnO4. what is the molarity of the KMnO4 solution? 5C2O42-+2MnO4-+16H+ → 10CO2+2Mn2++8H2OThe value of Ksp for Mg3(AsO4)2 is 2.1 * 10-20. The AsO43- ion is derived from the weak acid H3AsO4 (pKa1 = 2.22; pKa2 = 6.98; pKa3 = 11.50). (a) Calculate the molar solubility of Mg3(AsO4)2 in water.calculations for acetate buffer solutions 1. moles of sodium acetate in in 250.0 mL acetate buffer (below is the data to answer the answer) Deionized water Acetate Buffer Ammonia Buffer pH of solution 6.62 4.59 9.49 Ph of solution after addition of 1 mL of 0.6 M NaOH 12.41 4.71 9.50 pH of solution after addition of 1 mL of 0.6 M HCl 1.38 3.87 9.24 Preparation of Buffer solutions Mass of sodium acetate in acetate buffer ~ 1.1981 Volume of 3.0 M acetic acid in acetate buffrer ~ 3.81 Mass of ammonium chloride ~ 1.2721 Volume of 5.0 M NH4OH ~ 6.00