Which of the following species can oxidize both Mn(s) and Cd(s) but not Pb(s)? e° of Cd|Cd2+ = -0.40 V Pb|Pb2+ = -0.13 V e° of Mn|Mn2+ = -1.18 V e° of %3D A. 1 M CaSO4 (e° of Ca|Ca2+ = -2.87 V) B. 1 M CuSO4 (e° of Cu|Cu2+ = 0.34 V) O C. 1 M FeSO4 (e° of Fe|Fe2+ = -0.44 V) D. 1 M NISO4 (e° of Ni|Ni2+ = -0.25 V)

Chemistry by OpenStax (2015-05-04)

1st Edition

ISBN:9781938168390

Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Chapter19: Transition Metals And Coordination Chemistry

Section: Chapter Questions

Problem 15E: The standard reduction potential for the reaction [Co( H 2 O)6]3+(aq)+e[CO( H 2 O)6]2+(aq) is about...

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E0 values for Ce4 + / Ce3 + and Fe2 + / Fe moieties are +1.72 and - 0.4 V, respectively. What conclusion can you draw from these data? A. Ce4 + will oxidize Fe2 + B. Ce4 + is better oxidizing reagent than Fe2 + C. Ce3 + will oxidize Fe D. Ce3 + is a better oxidizing reagent than Fe2 +
1.065 g of stainless steel was dissolved in hydrochloric acid (chromium as Cr 3+ ) and diluted to 500.0 ml. A 50.00 ml sample was passed through a Walden reducer, where only iron is reduced (Fe3+ + e-  Fe2+), and titrated with 0.01920 M KMnO4 solution, which consumed 13.72 ml. A 100.0 ml sample was passed through a Jones reducer (Cr3+ + e-  Cr2+ and Fe3+ + e-  Fe2+) into 50.00 ml of a 0.1000 M Fe3+ solution. The resulting solution was titrated with 0.01920 M KMnO4 solution and 36.43 ml was consumed. Calculate the Fe and Cr concentrations of the sample in weight percent.
35.A sample of pyrolusite weighs 0.5000 g. To this is added 0.6674 g of As2O3 and dilute acid. After solvent action has ceased, the excess three-valent arsenic is titrated with 45.00 mL of 0.1000 N KMnO4. Calculate the oxidizing power of the pyrolusite in terms of percemtage MnO2. 36. A solution of Iodinebia such concentration that 20.0 mL are required to titrate the antimony in a 0.100 g sample containing 84.93% Sb2S3(339.7 g/mol). What is the value of 1.00 mL of this Iodine in terms of grams sulfue in tiration?
(a) What is the percentage of MnO2 in a pyrolusite ore if a sample weighing 0.4000g is treated with 0.6000g of pure H2C2O4•2H2O and dilute H2SO4 and after reduction has taken place (MnO2 + H2C2O4 + 2H+→ Mn2++ 2CO2 + 2H2O), the excess oxalic acid requires 26.26ml of 0.1000N KMnO4 for titration? (b) If pure As2O3 were used instead of oxalic acid, how many grams would be required in order for the other numerical data to remain the same?
(a) What is the percentage of MnO2 in a pyrolusite ore if a sample weighing 0.4000 g is treated with a 0.6000 g of pure H2C2O4.2H20 and dilute H2SO4 and after reduction has taken place (MnO2 + H2C2O4 + 2H+ Mn2+ + 2CO2 + 2H2O), the excess oxalic acid requires 26.26 mL of 0.1000 N KMNO4 for titration? (b) If pure As2O3 were used instead of oxalic acid, how many grams would be required in order for the other numerical data to remain the same?
In which of the below reactions is metal sulfide dissolution more energetically favorable? MnS + H+ <--> Mn2+ + HS- CuS + H+ <-->Cu2+ + HS-
A sample of pyrolusite weighing 0.6000 g is dissolved in a solution containing 5.00mL of 6.00 N H2SO4 and 0.900 g of H2C2O4.2H2O. The excess oxalate then requires24.00 mL of KMnO4 solution for titration. If each mL of the KMnO4 will oxidize the Fe(II)in 0.03058 g FeSO4.7H2O, what is the oxidizing power of the sample in terms of MnO2?84.33%
Calculate the pK for the oxidation of X by Hplus at 25 degrees C. X(s) + 1 Hplus → X1 plus (aq)+ 1/2 H2(g) The reduction potential of X1 plus is 0.31 V.
A sample of pyrolusite weighing 0.6000 g is dissolved in a solution containing 5.00 mL of 6.00 N H2SO4 and 0.900 g of H2C2O4 .2H2O. The excess oxalate then requires 24.00 mL of KMnO4 solution for titration. If each mL of the KMnO4 will oxidize the Fe(II) in 0.03058 g FeSO4 .7H2O, what is the oxidizing power of the sample in terms of MnO2?
For the coordination compound [Pd(CN)2(en)2][PtCl4]: How many unpaired d electrons are present in the cation and anion? What is the standard reduction potential in V of the complex anion (E° [PtCl4]2-/Pt) at 298.15 K? Given: E° Pt2+/Pt = +1.188V, Kf for the complex anion = 1.1 x 1016
You have 10ml of an 8% aqueous solution of H2Cl6Pt a) Calculate the platinum in this solution as well as b)the molar concentration of the platinum in this solution. The density of the solution is 1.05kg.L-1 Calculate the %Pt in the solution
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