A spectrophotometric method for the quantitative analysis of Ni2 in pharmaceutical formulation yields a Sat of 0.475 a.u. for asingle standard whose concentration of nickel is 1.83 ppb. What is the concentration of Ni* in a sample of formulation for whichSamp is 0.341 a.u?Anone of the choicesB) 241 ppbC 0.260 ppbD 3.08 ppbE 1.31 ppb The use of mediator makes a coulometric titration a more adaptable analytical technique than controlled-potential coulometry. Andan example of a mediator is,Athe electrogenerated hydroxide for the coulometric titration of weak and strong acidsthe end-point of the coulometric titrationC.the electrochemical cell where coulometric titration will take placeDthe solid product of electrogravimetric analysisE the cathode or anode of the electrochemical cell

Since you asked multiple questions, we will answer only first question for you. In order to get…

Answered: A spectrophotometric method for 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...

See similar textbooks

Similar questions

In a titration experiment, 25.0 ml of 0.0500M Sn was titrated with 0.10OM Fe in I M HCl to give Fe and Sn', using Pt and calomel electrodes Fe (aq) +e Fe (aq) E" = 0.732 V Sn (aq) +2e Sn E 0.139 V E(calomel) = 0.241VN Calculate E when 28.5mL of Fe is added.
A 0.6025 g sample was dissolved and the Ca2+ and Ba2+ ions present were precipitated as BaC2O4.H2O and CaC2O4.H2O. The oxalates were then heated in a thermogravimetric apparatus leaving a residue that weighed 0.5713 g in the range 320oC to 400oC and 0.4674 g in the range 580oC to 620oC. Calculate the percentage Ba in the sample.
help me with those please
For a solution in which μ = 7.0 x 10-2, calculate K'sp for a. AgSCN (Ksp (AgSCN) = 1.1 × 10-¹2, Ag+ = 0.25, ascN = 0.35) K's = sp b. Pbl₂ (Ksp (PbI2) = 7.9 x 10-9, apb²+ = 0.45, ar = 0.3) K'sp = c. La(103) 3 (Ksp (La(103) 3) = 1.0 x 10-¹¹, L²+ = 0.9, 10,- = 0.35) K'sp =
If a 25.00 ml aliquot of a solution containing sulfide ions was added to 25.00 ml of 0.0108 M Cu2+ solution. The CuS precipitate was washed and collected. The pH of the combined filtrate and washings was then adjusted by the addition of ammonia and the solution was titrated with 0.01453 M EDTA, using a suitable indicator. The endpoint volume was found to be 12.12ml. Find the molarity of the sulfide in the sample solution.
Potentiometry was employed to investigate the formation of complexes between EDTA and Cu²+ ions in aqueous solution. To do so, the potential of a Cu electrode was measured in a series of solutions containing 1 mM Cu(NO3)2, 100 mM KNO3, and varying concentrations of EDTA (added as the tetrasodium salt). Using the data provided below, calculate the formation constant (K) of the Cu²+-EDTA complex. CEDTAM E / V vs. SHE 1 x 10-6 0.252 1 x 10-5 0.252 0.251 0.243 0.098 -0.056 -0.074 -0.085 -0.116 -0.145 1 x 10-4 5 x 10-4 0.001 0.002 0.005 0.010 0.100 1.000
A 10.0 g sample of KC3H504 (A)(MW = 204.23 g A) was titrated with 50.00 mL of KOH (B) to endpoint. What is the molarity of the KOH solution? Use A and B to show compounds in the working. Given: KCgHsO4 (s) + КОН (аq) ----> K2C8H4O4 (aq) + H2O (1I) 1. 10.0 g Ax 3. 5. 7. 9 2._ 4. X 6. 8. 1.--- 2.__--- 3._---- 4._- 5. A 6.
For the extraction of a metal ion with a metal chelator, by how many units will the pH change if the distribution ratio, D, changes from 0.060 to 100.0? Assume that the concentration of the ligand in the organic phase, [HL]org, will remain constant and that n = 2. ApH = units
(a) Why is a small amount of MgY2- often added to a water specimen that is to be titrated for hardness? (b) The TI in a 9.76g sample of redenticide was oxidised to the trivalent state and treated with an unmeasured excess of Mg/EDTA solution. the reaction is TI3 + MgY2- ---> TIY + Mg2+. Titration of the liberated Mg2+ required 13.34mL of 0.03560 M EDTA. Calculate the percentage of TISO4 (504.8 g/mol) in the sample.

Recommended textbooks for you

Chemistry

ISBN:

9781305957404

Author:

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

Publisher:

Cengage Learning

Chemistry

ISBN:

9781259911156

Author:

Raymond Chang Dr., Jason Overby Professor

Publisher:

McGraw-Hill Education

Principles of Instrumental Analysis

Chemistry

ISBN:

9781305577213

Author:

Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:

Cengage Learning

Chemistry

ISBN:

9781305957404

Author:

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

Publisher:

Cengage Learning

Chemistry

ISBN:

9781259911156

Author:

Raymond Chang Dr., Jason Overby Professor

Publisher:

McGraw-Hill Education

Principles of Instrumental Analysis

Chemistry

ISBN:

9781305577213

Author:

Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:

Cengage Learning

Organic Chemistry

Chemistry

ISBN:

9780078021558

Author:

Janice Gorzynski Smith Dr.

Publisher:

McGraw-Hill Education

Chemistry: Principles and Reactions

Chemistry

ISBN:

9781305079373

Author:

William L. Masterton, Cecile N. Hurley

Publisher:

Cengage Learning

Elementary Principles of Chemical Processes, Bind…

Chemistry

ISBN:

9781118431221

Author:

Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard

Publisher:

WILEY

SEE MORE TEXTBOOKS

A spectrophotometric method for the quantitative analysis of Ni2 in pharmaceutical formulation yields a Sa of 0.475 a.u. for a single standard whose concentration of nickel is 1.83 ppb. What is the concentration of Ni* in a sample of formulation for which Samp is 0.341 a.u?