What is the purpose of adding H2O2 to this reaction?2 CoCl2.6H2O(s) + 2 NH4C1S) + 8 NH3(aq) + H2O2(aq) + 3 H2O1)2 [Co(NH3)sCl]Cl2(s)+ ½ O2(g)

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Answered: What is the purpose of adding H2O2 to…

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

Chapter21: Transition Metals And Coordination Chemistry

Section: Chapter Questions

Problem 88AE

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What will the yield of silver chloride, AgCl, be if. Two moles of each of the following compounds are treated with an excess of silver ion, Ag+. Explain the reasoning that can lead to each solution. a). [Cr (H2O)5 Cl] Cl2 b). [Cr (H2O)3 Cl3] c). [Cr (H2O)4 Cl2] Cl
How to write a chemical equation for transition metal ions found in a solution? The ions found were Cobalt and Copper. Co2+ (aq) + Cu2+ (aq) was mixed with NaOH (aq). It formed Co(OH)2 (s) + Cu(OH)2 (s) + Na^+ (aq). The sample was decanted and Na+ was removed. NH3(aq) was added to Co(OH)2 (s) + Cu(OH)2 (s) and became Co(OH)2 + Cu(NH3)4 ^2+ and NH3. The sample was centrifuged and decanted the ions were now in their own tubes. One tube had Co(OH)2 and the other had Cu(NH3)4 ^2+ and NH3. The tube with Co(OH)2 was then mixed with HNO3 and became Co^2+. The tube with Cu(NH3)4 ^2+ and NH3 was mixed with HNO3 and became Cu^ 2+ and NH4^+.
Determine the oxidation state of the transition metal in: Cr2O7 Cr=
Many important metals occur as sulfide, arsenide, and antimonide minerals, especially in the Sudburymineral complex. The first step in processing these ores involves “roasting” the ore in air to produce the metalor metal oxide, along with nonmetal oxides that can be serious pollutants if not trapped.Suppose that you roast 2.00 kg of the mineral maucherite, Ni11As8. The balanced equation for thereaction is:2 Ni11As8 + 31 O2 → 22 NiO + 8 As2O5(a) How many kg of NiO can be produced?(b) How many kg of the pollutant As2O5 can be produced?(c) How many liters of air at 25°C are required for roasting? Assume that air contains 23% O2 by mass,and that the density of air at 25°C is 1.2 g/L.Molar masses: Ni11As8 1245.0 g/mol NiO 74.69 g/mol As2O5 229.84 g/mol
Explain why Transition Elements show variable oxidation states?
1. The general formula for the copper ammine complex is [Cu(NH3)x]SO4•H2O. Calculate the formula weight for several values of x. (Include a short discussion on what you think reasonable values for x might be.) 2.You will need to prepare approximately 6 g of the copper ammine product. Estimate how much CuSO4•5H2O you should start with to prepare approximately 6 g of the copper ammine complex. 3.Calculate how many grams of CuSO4•5H2O are required to prepare a 0.05 M solution in a 100 mL volumetric flask. This solution will serve as a stock solution from which you’ll prepare your standards. 4.Show the equation needed to calculate the volume of 0.05 M stock solution needed to prepare a set of diluted solutions in a 10 mL volumetric flask. 5.Rearrange the equation from (4) to show how you can calculate the actual concentration of each standard, given the actual volume of stock solution delivered. 6.Show how you will calculate the ratio of ammine to copper (the value of x in the formula…
What is the oxidation state of Cr in Cr2O7? +4 +7 +3
What is the structure of CrO5 and what is Oxidation number of Cr in this compound?
Determine the oxidation state of: 1. Cr in KCr2O7
What is the oxidation state of each element in Mn(CrO4)2? O = _______ Cr= ________ Mn=________
How many geometric isomers exist for [CoCl2(en)2]Cl? How could you determine if your product contains a single geometric isomer or a mixture of geometric isomers?
Which of these compounds is expected to be colorless? (A) K4[Fe(CN)6] (B) K4[Co(CN)6] (C) K2[Ni(CN)4] (D) K2[Zn(CN)4]

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What is the purpose of adding H2O2 to this reaction? 2 CoCl2.6H2O(s) + 2 NH4CI(s) + 8 NH3(aq) + H2O2(aq) + 3 H2O@) → 2 [Co(NH3)sCI]Cl2(s) + ½ O2(g)