Q: A. Please provide the products of each reaction. H₂N CI CI OH F NaOCI CH3CN / Acetic Acid
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Q: 4) (2 pts.) This is a "retrosynthesis" problem. Identify the TWO MOLECULES necessary to prepare the…
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A: Given: VPb(NO3)2=175mL;[Pb(NO3)2]=0.270M;[S2−]=0.0263M%Pb=???Step 1: Write the balanced…
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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?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.
- 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.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.
- A 1.43 x 10-4 L solution of 45.7 mg/mL protein was analyzed using the Kjeldahl procedure. After digestion of the protein, the liberated NH3 was collected in 9.80 mL of 0235 M HCl. The unreacted acid required 10.75 mL of a standard solution of 0.0149 M NaOH for complete titration. Calculate the weight percent of nitrogen in the protein. (Molar mass N = 14.00674 g/mol)A 50.00 mL aliquot from a 1.50 L ferrous sulfate (FeSO4) stock solution is titrated with 20.00 mL potassium dichromate (K2Cr2O7) to reach the green-to-purple diphenylamine endpoint. If the concentration of K2Cr2O7 is 2.50 mM, calculate the FeSO4 concentration of the stock solution. Enclose in a box your final answer. Use correct significant figures. 6 FeSO4 + K2Cr2O7 +7 H2SO43 Fe2(SO4)3 + Cr2(SO4)3 + K2SO4 + 7 H₂OCompare Tris and PBS as buffers in terms of temperature, ionic strength, and solvent effects.