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- 0.0322 M EDTA solution is used as the titrant in the titration of a 50.00 mL solution that is 0.0129 M in Cu2+. The solution is held at pH = 10.00 by a buffer that is 0.050 in ammonia (NH3). At what volume (in mL) of EDTA added will the equivalence point be reached?Calculate the pNi2+ at the equivalence point for the titration of a 20.00 mL solution of 0.0500 M NaOH with 0.045 M NiCl2 to precipitate Ni(OH)2 (Ksp = 6 x 10-16).Explain why K2CrO4 is used as an indicator in Argentometric titration?
- A 50.0ml sample of water containing both Ca+2 and Mg+2 is titrated with 16.54ml of 0.01104M EDTA in an ammonia buffer of pH 10. Another 50.0ml sample is treated with NaOH to precipitate the Mg(OH)2 and then titrated at pH 13 with 9.26ml of the same EDTA solution. Calculate the ppm each of CaCO3 and MgCO3 in the sample.will H3N titrate with 1.0M Ba(OH)2?How will 100mM Tris-Cl buffer be prepared?
- In this experiment, the color change from pink/violet to colorless during the titration is caused by: change from MnO4– to Mn2+ change from Fe2+ to Fe3+ change from H+ to H2O the addition of an indicator.Average [EDTA] = C: Determination of the hardness of an unknown water sample: Using an unknown water sample, three 25 mL samples in 3 separate 250 mL Erlenmeyer flasks are prepared. To each flask, 5 mL of pH pH10 buffer, 3 to 5 drops of Eriochrome Black T indicator, and 15 drops of 0.03 M MgCl2 solution are added. Each flask is titrated to the end point using EDTA.1. TRUE OR FALSE (a) Y-4 is the form of EDTA that effectively chelates metals in solution. True False (b) A complexometric titration is a form of volumetric titration in which the formation of a colored complex between the metal and the indicator is used to indicate the end point of a titration. True False
- What is the Ph of the buffer solution that contains 1.00 M HC2H302 (acid) and 0.800 M KC2H302 with pKa of 4.74?A 0.1064-g of aldrin pesticide sample was decomposed and the liberated chloride was extracted using water. It was titrated with 23.28 mL of 0.03337 M AgNO 3 using a chromate indicator. Express results in % aldrin (C 12H 8Cl 6, MM=365). 17.28 % 22.12 % 44.42 % 63.21 %A 0.4126-g sample of primary-standard Na₂CO₃ was treated with 40.00 mL of dilute perchloric acid. The solution was boiled to remove CO₂, following which the excess HClO₄ was back-titrated with 9.20 mL of dilute NaOH. In a separate experiment, it was established that 26.93 mL of the HClO₄ neutralized the NaOH in a 25.00-mL portion. Calculate the molarities of the HClO₄ and NaOH. Input your answer in compound form (i.e. x.xx M HClO4 and x.xx M NaOH) with the correct significant figures.