What is the sign and value of the Nernstian slope for potentiometric analysis of S²- when Ecell is plotted against log [S²] ? Select one: +0.0592 -0.0592 +0.0296 -0.0296
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- (b) The formula that relates the spin only magnetic moment (en) to the number of unpaired d-electrons (x) is: Heft = √√x(x+2) (1) For each of the following complexes, use this formula to calculate the number of unpaired electrons: Nan[Rh(CO)4], Hell0 BM Rb₂lMoBrn), Heft=2.83 BM (ii) Using the answers from part (b)(i): • Draw crystal field d-orbital energy level diagrams for each complex. • State the oxidation state of the metal in each complex. • Determine the value of n for each complex.Calculate the (Ex/GS) atomic ratio for 3s--3p (oppose) in Mg* at 3000k? 1.081x10-7 6.33x10-7 None 17.34x10-7 8.67x10-7 4.33x10-716.72 Show how P = kT(a In Q/OV), leads to PV = nRT.
- Calculate non-standard Ecell 2+ 2+ (ac) + Zn cac) [Zn²+] = 0.023 M 3+ Co Cae) + Zn (s) = Co [Co³+] = 0.25M [co²+] = 0.04M Ered (Zn) = -0.763v Ered (Co) = 1.842V1. Calculate the stability field of gibbsite Al(OH)3 versus its aqueous species on the basis of the below listed four equilibrium equations. Al(OH)3(gibbsite) + 3H+ = A13+ + ЗН20() Ks0 = 109.36 Al" + H,O(1) = Al(OH)** + H* Al3* + 2H2O(1) = Al(OH)2* + 2H* Al³* + 4H2O(1) = Al(OH)4¯ + 4H* K. sl =104.99 K s,2 =10-10.13 K s,4 =10-22.05 2. Two solutions have the following activities: 0.02 mol L-' F and 0.01 mol L' Ca²+ 0.0001 molL-'F and 0.0002 mol L' Ca²+ i. ii. Calculate the saturation indices of the solutions versus fluorite (pKsp = 10.6) and how much fluorite would precipitate or dissolve in order to achieve equilibrium. -Calculate the pH of the cathode compartment for the following reaction given Ecell = 3.01 V when [C₁³+] = 0.17 M, [A1³+] = 0.27 M, and [Cr₂O7²- ] = 0.53 M. pH = 2- 2 Al(s) + Cr₂O7²- (aq) + 14H+ (aq) → 2 Al³+ (aq) + 2 Cr³+ (aq) + 7H₂O(1)
- Determine the structure factor for the basis of the diamond. (a) S, =1+e 4+*+) basis (b) Spask =1+e? (c) Spasis =e (d) Spasis =1+ei+½+%)The temperature-dependent form of the extended Debye-Hückel equation is (-1.825 × 10°) (eT)¯ 2 Va log (y) = 1+ 2.00/eT where y is the activity coefficient, e is the dielectric constant of water (a unitless quantity), T is the temperature (in Kevin), z is the charge of the ion, µ is the ionic strength (in moles per liter), and a is the ion size parameter (in picometers). The temperature- dependence of the dielectric constant is given by the equation e = 79.755e(-4.6×10~³)(T–293.15) where the temperature is in Kelvin. What is the value of the activity coefficient of Pb2+ at 70.00 °C when the ionic strength is 0.014 M? étv O, hulu MacBook Pro G Search or type URL 24 4. % & 5 8 R. T. Y U F G H K V. M 0OSolutions of three electrolytes have the same ionic strength and different dielectric constants as 4, 25 and 81 and expected temperature is 225 K, 256 K and 298 K. The corresponding relative magnitude of Debye-Huckel screening lengths of the three solutions are: (a) 60, 400 and 1377(b) 30, 80 and 155(c) 15/2, 16/5, and 17/9
- Given: Cell Notation EocellVO2+/VO2+ 1.000VO2+/V2+ 0.360VO2+/V3+ 0.337V2+/V -1.130V3+/V2+ -0.255Draw The Frost diagram of Vanadium.Cengage Learning OWLv2 | Online teaching and b Cengage Learning OWLv2 | O × | k.mol to j/k - Google Search × + C prod03-cnow-owl.cengagenow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator-assignment-take CH 18 Thermodynamics [Review Topics] [References] New Chrome available : 1. Compare Absolute Entropies 2 pt Use the References to access important values if needed for this question. Consider the reaction: 2. Standard Entropy of Reaction (Enh...2 pt (M) N2(9) + 202(g) → 2NO2(g) 3. AS surroundings: Calculate (Enhan... 2 pt 1req 4. AG° = AH-TAS° (Enhanced) 2 pt (M) 5. AG: Predict Signs 2 pt (M) Using standard thermodynamic data at 298 K, calculate the free energy change when 2.46 moles of N2 (g) react at standard conditions. Substance AG (kJ/mol) 6. AG: Enthalpy, Entropy and Tempera..2 pt M 7. AG from Free Energies of Forma... 2 pt 1req Question Question Question 8. Calculate K from AG° O AGº = rxn 2 pt 1 req 9. Calculate K from AH° and AS° (E... 2 pt 1 req 10. Calculate AG from…What is the Madelung constant for MgO (rock salt) structure? Include only the first 3 terms. Give your answer to 3 significant figures.