Please answer all the questions in thescreenshot provided, thank you! I willrate!>Calculate pCd2+ at each of the given points in the titration of 45.00 mL of 0.0080 M Cd2+ with 0.0080 M EDTA in the presenceof the auxiliary complexing agent NH₁₂. The solution is buffered at a pH of 11.00 and the NH3 concentration is fixed at 0.100 M.The fraction of EDTA in the form Y as a function of pH can be found in this table. The formation constant for theCd²+-EDTA complex can be found in this table. The cumulative formation constants for the Cd(NH3)2+ complexes can befound in this table.0 mLPCd²+=40.00 mL15.00 mLPCd2+ =pCd2+=45.00 mLpCd2+=50.00 mLPCd²+=

Step 1: Calculate pCd²⁺ at 0 mL EDTA At this point, no EDTA has been added, so all of the cadmium…

Answered: Please answer all the questions in the…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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To adjust the EDTA solution, a 0.01 M 10 mL Ca+2 sample was taken and 10 mL of pH 10 buffer was added to it, and the volume was completed to 100 mL. Then, two drops of EBT indicators were added and titrated with EDTA. Since the consumption is 10.4 mL, which of the following is the concentration of the EDTA solution in terms of molarity? A. 0.0076B.0.0101C. 0.0096D.0.0067
2. Construct a titration curve for the following complexometric titration by calculating the calcium ion concentration in terms of pCa during the titration of 50.00 mL of 0.0500 M CaCl with 0.1000 M EDTA in a solution buffered to constant pH = 10, after the addition of the following volumes of EDTA reagent: (a) In the pre-equivalence region at 10.00 mL, (b) At the equivalence point (include what the equivalence volume calculation), and (c) After the equivalence point at 30.00 mL. Given that Kf for CaY2-is 1010.65 and ay4- at pH 10.0=0.30.
The calcium content of a milk sample was to be determined by EDTA titration. A sample weighing 0.206 g was mixed with an aqueous buffer at pH 11.5. A few drops of EBT indicator were added and the solution required 24.25 mL of 1.538 x 10-2 M EDTA to reach the endpoint. Calculate the weight percent of calcium (FW =40) in the milk.
A solution containing 60 mL of a 0.025 mol / L metal ion (Mn +) buffer buffered to pH 7.0 was titrated with a 0.05 mol / L EDTA solution. Data: Conditional formation constant (Kf)=10^15. Determine: i) The concentration of the free metal when ½ of the equivalence volume is added. ii) the concentration of free metal in the equivalence volume. iii) the concentration of free metal with an excess of 2 mL of EDTA? (Data - EDTA constants: K1=0.01; K2=2.19.10^-3; K3=6.92.10^-7; K4=5.75.10^-11)
Calculate PCa of the solution that results when 50.0 mL of 0.0050 M Ca2+ is titrated with 25.00 mL of 0.0100 M EDTA in a solution buffered to a conastant pH of 10.00.
What should be the pH of the environment for 50% of Ag+ ions to complex in the cyanide (CN¯) anion equivalent to a solution containing 10-3 M Ag+ ions? pKa for HCN = 9,3 ; logß2 for Ag(CN)2 - = 20,0 How can we INCREASE the complexity rate? Please help.
50 mL of a sample known to contain Mg+2 was taken and titrated with 0.075 M EDTA standard solution by adding pH 10 buffer and EBT indicator. Since the EDTA consumption is 10.5 mL, which of the following is the amount of magnesium in the sample in ppm? (Mg:24 B/mol)
At 40.0 mL 0.0050 M Sr2 + pH 10, 0.0100 M EDTA is titrated. Calculate the pSr for the equivalence point. Kol(SrY) = 4,3x108 , α4 = 0,35
A 25.00 ml of Ni2* solution was diluted in HCI and treated with 25.00 ml of 0.05283 M NazEDTA. The solution was neutralized with NaOH followed by addition of acetate buffer until the pH 5.5. The solution turns yellow after addition of few drops of xylenol orange indicator. Back titration using standard 0.022 MZn2* at pH 5.5 requires 17.61 ml until end point, on which the solution will turn red. Calculate for the molarity of the unknown. Ans. 0.03664 M
What should be the pH of the environment for 50% of Ag+ ions to complex in the cyanide (CN¯) anion equivalent to a solution containing 10-3 M Ag+ ions? pKa for HCN = 9,3 ; logß2 for Ag(CN)2 = 20,0 How can we INCREASE the complexity rate?
The amount of calcium in physiologic fluids can be determined by a complexometric titration with EDTA. In one such analysis, a 0.100-mL sample of blood serum was made basic by adding 2 drops of NaOH and titrated with 0.00528 M EDTA, requiring 0.233 mL to reach the end point. Report the concentration of calcium in the sample as miligrams of Ca per 100 mL. (Ca = 40.078 amu).
One of the buffers that can be used for running an agarose gel is 1x TBE (tris borate EDTA) buffer. The recipe for 1x TBE is: • 0.13 M tris • 45 mM boric acid • 2.5 mM EDTA How will you make 1 L of this buffer from 1M stock solutions of tris, boric acid, and EDTA? Put your answers in the blanks. To make 1 Lof this buffer, I would need: L of 1 M Tris ml of 1 M boric acid ml of 1 M EDTA Then, these will be topped up with distilled water in a volumetric flask up to the 1L mark.

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