A standard solution of EDTA (0.08 M) is being used to titrate 50 ml of a 0.04 M Ca 2+ solution. (buffered at pH= 10), Kf ' = 1.8 ×10 10. Calculate the value of pCa 2+ 1. before addition EDTA solution 2. after addition 5.00 ml of EDTA solution 3. after addition 25.00 ml of EDTA solution
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A standard solution of EDTA (0.08 M) is being used to titrate 50 ml of a 0.04 M Ca 2+ solution.
(buffered at pH= 10), Kf ' = 1.8 ×10 10. Calculate the value of pCa 2+
1. before addition EDTA solution
2. after addition 5.00 ml of EDTA solution
3. after addition 25.00 ml of EDTA solution
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- Calculate the pSr value for 10 mL of EDTA in the titration of 50 mL of 0.02 M Sr2 + in an environment buffered at pH 11 with a titre of 0.02 M EDTA. A. 1.89B. 3.78C. 7.56D. 12.11Calculate the PCa vs. EDTA titration curve for 50.0 mL of 0.0060 M Ca2+ being titrated with 0.0150 M EDTA in a solution buffered to a constant pH of 10.00. After the addition of 0.00 mL After the addition of 26.0 mLA 30-mL portion of a solution containing Ca2+ and Mg2+ was titrated with 28.19 mL of 0.213 M EDTA at pH 10. Another 30-mL aliquot of the same Ca-Mg mixture was treated with NaOH to make the solution strongly alkaline and precipitate Mg(OH)2. This solution was then titrated with the same EDTA solution. What would be the required EDTA volume (in mL) to reach the endpoint of the second aliquot if it was found that there was 0.061 M of Mg2+ in the sample?
- Calculate the PCa vs. EDTA titration curve for 50.0 mL of 0.0060 M Ca2+ being titrated with 0.0150 M EDTA in a solution buffered to a constant pH of 10.00. After the addition of 0.00 mL After the addition of 5.00 mL After the addition of 26.00 mLThe formation constant (Kf) for calcium reacting with EDTA is 6.2 x108. A calcium-EDTA titration was done at a pH = 10.00, where the fraction of species of Y4- is approximately 0.39, what would be the value for the conditional formation constant (Kf') for the reaction? Group of answer choices 6.2 x 108 2.4 x 108 4.5 x 1011 1.0 x 1010An unknown Ca solution was prepared by weighing a 2.122 g sample, dissolving it in HCl and then titrating this unknown Ca2+ solution with 41.72 mL of a 0.1160 M standard EDTA solution to reach the endpoint at pH = 10.00 using Eriochrome Black T indicator. Calculate the % CaO in the sample [MW CaO = 56.08 g/mol; AW Ca = 40.08 g/mol]. The reaction is a 1:1 Ca:EDTA relationship.
- Is this for Average Molarity of EDTA Standard Solution? Then, would it be always the same with average Molarity of EDTA? How about the Ca Titer (mg Ca/mL of EDTA Solution? Show step by step solution.The hardness of a water sample may be determined by titrating a 100-mL sample of water with 0.010 M EDTA. If the Eriochrome Black T (EBT) end point occurs after 12.3 mL of the EDTA solution is added, calculate the water hardness in terms of (1) ppm CaCO3 and (2) mM Ca2+.A sample of pure CaCO3 weighing 0.2428g is dissolved in HCl and the solution diluted to 250ml in a volumetric flask. A 50.00ml aliquot requires 42.74ml of an EDTA solution for titration. A 200ml sample of water containing Ca+2 is titrated with 16.38ml of the EDTA solution. Calculate the degree of hardness of water in ppm CaCO3.
- A sample of pure CaCO3 weighing 0.3677g is dissolved in hydrochloric acid and the solution diluted to 250.0ml in a volumetric flask. A 25.00ml aliquot requires 30.26ml of an EDTA solution for titration. Calculate a) the molarity of the EDTA solution; b) the number of grams Na2H2Y•2H2O (FW = 372.2) required to prepare 500.0ml of the solution.02) Consider the titration of 20.00mL of a Ca2+0.0250mol/L solution with 0.0500mol/L EDTA. The Ca2+ solution is initially buffered at pH 10.00 (α4= 0.35 at pH 10). Given: Kf= 5.0 x 10-10 a)Why was the solution buffered? b)Calculate pCa values at the following points: before the addition of titrant and after the following additions of 5.00 mL, 10.00 mL and 12.00 mL of the titrant.Calculate the hardness in terms of parts per million calcium carbonate (100.0869 g/mol) in a 50.00 mL aliquot of milk sample. The sample was treated with a small amount of ammonia buffer to bring the pH to 10 followed by the addition of 10 drops EBT indicator. The milk sample required 10.00 mL of 8.000 x 10-3 M EDTA for titration. 160 ppm 4 80 320