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Which of the following will not react with FeCl2 (aq) A. Na (s) B. KOH (aq) C. Ca(NO3)2 (aq)

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

Chapter18: Electrochemistry

Section: Chapter Questions

Problem 20RORR: The Ostwald process for the commercial production of nitric acid involves the Following three steps:...

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Question

Which of the following will not react with FeCl₂ (aq)

A. Na (s)

B. KOH (aq)

C. Ca(NO₃)₂ (aq)

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The Ostwald process for the commercial production of nitric acid involves the Following three steps: 4NH3(g)+5O2(g)4NO(g)+6H2O(s)2NO(g)+O2(g)2NO2(g)3NO2(g)+H2O(l)2HNO3(aq)+NO(g) a. Which reaction in the Ostwald process are oxidation-reduction reactions? b. Identify each oxidizing agent and reducing agent.
A 45.40% ferric oxide needed 0.7519 gram of an impure sample of iron ore. The analyte then required 38.50 ml of potassium permanganate solution to oxidize the ferrous ions. [As= 74.92, Fe=55.85, Mn=54.94, K=39.10]. What is the Normality of the permanganate solution?
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^+.
Using the table below determine which is the best oxidizing agent: Cl- (aq), Fe3+ (aq), NO3- (aq), H2 (g), Zn (s)
a)Sodium thiosulfate, Na2S2O3, is used as a fixative in photography. What is the oxidation number of each of the elements in sodium thiosulfate (NOTE – the two sulfur atoms do not have the same oxidation state)?b)What is the oxidization number of Co in K3(CoF6)
20 g of K2C2O4 is reacted with KMnO4 according to the following chemical equation: K2C2O4 (aq) + 2 KMnO4 (aq) + 8 H2O →10 CO2 (g) + 2 Mn(OH)2 (s) + 12 KOH (aq) a) How many grams of KMnO4 are required for this reaction? b) How many grams of Mn(OH)2 will be produced? c) If the reaction is done in 2.5 L of solution, what will be the concentration of KOH at the end? d) If CO2 is collected,how many liters of CO2 gas will be formed at STP?
FeO + Zn(s) --------->. ZnO + Fe(s)What is the Oxidizing Agent?
A solution contains both NaI and NaBr. Which oxidizing agent could you add to the solution to selectively oxidize I-(aq) but not Br-(aq)?(a) Cl2 (b) H2O2 (c) CuCl2 (d) HNO3
A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure Fe2O3 (159.69 g/mol). A second sample of iron ore, labeled B, weighed 1.750 g and gave 0.5097 g of pure Fe2O3. What is the % Fe (55.85 g/mol) in Ore A?
In the production of printed circuit boards for the electronics industry, a 0.765 mm layer of copper is laminated onto an insulating plastic board. Next a circuit pattern made of a chemically resistant polymer is printed on the board. The unwanted copper is removed by chemical etching and the protective polymer is finally removed by solvents. One etching reaction isCu(NH3)4Cl2(aq) + 4NH3(aq) + Cu(s) → 2Cu(NH3)4Cl(aq)A plant needs to manufacture 8700 printed circuit boards, each 7.55cm x 18.0cm in area. An average of 72.0% of the copper is removed from each board (density of copper=8.96g/cm3.) What mass of Cu(NH3)4Cl2 reagent is required?
A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure Fe2O3 (159.69 g/mol). A second sample of iron ore, labeled B, weighed 1.750 g and gave 0.5097 g of pure Fe2O3. What is the %Fe3O4 (231.54 g/mol) in Ore A?
Major Entities present in Cu(s) a) Cu(s), H2O(l) b) Cu2+(aq), H2O(l)

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