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In Fe + O2 --> Fe2O3 what is the coefficient for Fe?
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- A is the snort electran canfiquretiCA Fe2+Given the standard reduction potentials (Eo’) for ubiquinone (Q) and NADP+provided below, consider the following questions.Q + 2H+ + 2e- ---> QH2 Eo’ = 0.04 VNADP+ + H+ + 2e- ---> NADPH Eo’ = -0.32 V - Calculate the standard ΔEo’ for the oxidation of NADPH by Q. From the reactantsin your derived redox reaction, indicate the oxidant and reductant.- Calculate the standard free energy of the redox reaction in part (a) and indicate if thereaction is exergonic or endergonic.College of Teacher Bachelor of Secondary Education *promoting pedagogical excellence elor of Sec omoting pedage RIN ht: (a) (b) Br. C. CH3 b1. HNO3, H2SO4 2. Fe, H30*r H2/Pd s / oD Br NO2 (c) KMN04 7 (d) Cl CH3CH2CH2CI AICI3 H20 7. OCH3 4. Predict the major product(s) of the following reactions: OM (a) CI (b) CH CH CH3CH2C! AICI3 CH3CH2COCI AICI3 (c) CO2H HNO3 (d) N(CH2CH3)2 H2SO4 SO, H2SO4 ASITY
- Given: Zn 2+ (aq) + 2e Zn(s); E° = -0.76 V Cu²+ (aq) + 2e Cu(s); E° = 0.34 V Cr₂O7²- (aq) + 14H*(aq) + 6e2Cr³+ (aq) + 7H₂O(l); E° = 1.33 V Which of the following species is the strongest oxidizing agent?4m K R EMetals H X Se.com/u/1/c/MTUAMTYZNTK2OTM3/a/Mig0NjcAMzk0ODA4/delails tals Homework Packet 18.pdf Oper wth UNDERSTANDING ORES Most ores look like ordinary rocks. You would not guess that they contain shiny metal. The earth's crust is made up of many minerals. Minerals can be defined as naturally occuring chemical elements and compounds. People have discovered more than 2,000 different minerals. Many of these contain metals. But because the metal elements are linked with other elements in the minerals, the metals do not show all of their properties. Figure A 1. Most minerals are elements, compounds 2. In order to free the metal from the other elements, a mineral must be synthesized, decomposed Page 3 I 6 Q +Research has been conducted on molybdates as replacements for chromates in the surface treatment of various metals in order to reduce corrosion by the formation of a surface film of MoO,. The overall reaction with iron is 2Fe(s) + 3M00- (aq) + 6H*(aq) - Fe;Os(s) + 3M0O:(s) + 3H;O() Given the following AG; in calories per mole at 25°C: Fe,O; (s) =-177,100, MoO:(s) =-120,000, H:O (1) =-56,690, Mo0; (aq) =-205,420 (a) Is the above overall reaction spontaneous under standard conditions? (b) Calculate the standard electrode potential for the above overall reaction. (c) Write an expression for the electrode potential as a function of molybdate ion concentration and pH. (d) Is the overall reaction spontaneous for a molybdate ion concentration of 0.001M at pH 7.0?
- Six iron tablets containing FESO4-7H,0 were dissolved in 100-ml of 0.1 M HNO; with gentle heating. All of the Fe- is converted to Fe by the strong oxidizıng conditions. After the solution had cooled to room temperature 2.5-ml of 35wt% NH4OH was added. The precipitate Fe;O3-xH,O that was filtered weighed 0.345 g. Thermogravimetric analysis of the crude product showed a 10.5% weight loss below 150 C How much iron was in each of the tablets? Report the average mg-Fe per tablet?(d) onlyThe Nernst-Planck equation (shown below) describes the motion of a charged chemical species in a fluid. dC; z,FC; dv J; = - D; dx RT dx' What are the units for the ion flux J, where: zis the valence state of the ion (unitless) C is the concentration (mol/m³) Fis the Faraday constant (Coulomb/mol) Ris the ideal gas constant (kg m²/(s² mol °K)) Tis the temperature (K) dCi/dx is the concentration gradient (mol/m*) dV/dx is the electric potential gradient (V/m) D; is the diffusion coefficient (m²/s) Note that Coulomb is a unit of charge and V is volts where 1 V= 1 Joule/Coulomb)
- 2.( J Given the standard reduction potentials (E°) for ubiquinone (Q) and NADP+ provided below, consider the following questions. Q+ 2H+ + 2e ---> QH₂ NADP+ + H+ + 2e---> NADPH Eº⁹ = 0.04 V Eº⁹ = -0.32 V (a) ( Calculate the standard AEº for the oxidation of NADPH by Q. From the reactants in your derived redox reaction, indicate the oxidant and reductant. (b): .) Calculate the standard free energy of the redox reaction in part (a) and indicate if the reaction is exergonic or endergonic.(7) Arrange the following column with increasing order of efficiency based on the plate height values: Plate height values (a) 0.5 mm; (b) 0.05mm; (c) 5 cm; (d) 5 mmGiven: E0 -0.49V Fe (ag) t 2e teu) fe *" E -0.04V (aq) +3e tela) E +0 77 V Fe " (aqlte Fe "(aq). Cl2(g) + 2e 7 201 (aq). 34 E': +1-36 V Cal oulate the AE° for the reaction 2t Fe(s) t Claca) - te "(aq) t 2ci Caq).
