In a system with an anodic overpotential, the variation of ŋ as a function ofthe current density:1. at low fields is linear 2. at higher fields, it follows Tafel's lawFind the range of current densities for which the overpotential has the samevalue as when calculated for cases 1 and 2 (maximum relative difference of5% with respect to the behavior for higher fields). To which overpotentialrange does this correspond?Data: 10 = 1.5 mA cm², T = 300°C, ẞ = 0.64, R = 8.314 J K 1 mol¹ and F = 96485C mol-1.

Answered: Image /qna-images/answer/101c5e67-9f72-49e0-ac40-8b96fee95fc5.jpg

Answered: In a system with an anodic…

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter27: Molecular Fluorescence Spectroscopy

Section: Chapter Questions

Problem 27.7QAP

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Kindly answer no i, ii & iii
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You will need the following data to do the calculations below. Parameter Eel Energy/cm-1 19735 VII 213.36 vx 0.14 v 122.31 vox E(I*) 0.883 7603 (a) Find the excited state dissociation energies, Do and Dé. In order to do this, you must find the convergence limit, max, which is the value where the excited state potential energy curve becomes asymptotic relative to the v" = 0 level. We can find this by taking the derivative of v with respect to order to solve for max. Referring to Figure 1, you can clearly see that + 1½), solving for (v' + 2)and substituting it back into equation (3) in max and Do = vmax - voo ve v'exé De = Dó + 2 4 (5) (6) (b) E(I*) is the energy difference between the dissociated I atoms from the ground state (I + I) and those from the excited state (I + I*) where I* indicates an I atom in the excited state (the result of energy being conserved upon dissociation). Using the data in Table 1 and the values that you calculated in part (a), calculate D" and Do" and the…
Vibrations of molecules can be approximated by a harmonic oscillator only near the mini- mum of the binding potential curve, i.e., for small amplitudes for vibrations. Much better description is provided by the Morse potential 2 1 -h?w² ( n+ 4De En = hw ( n + A) Consider the 39K 35C1 molecule. In the far infrared spectrum, it has an intense line at 278.0 cm-1. Assume that it is an ideal quantum harmonic oscillator and estimate the period of vibration of the molecule. B) Now consider that 39K 35C1 molecule is described with a Morse potential with De 34843.15 cm-1 (this value comes from an experimental fit from the literature). If the excitation from the vibrational ground state to the first excited state is 278.0 cm-1, how much would the period of vibration change? How much would the energy transition between the first and second excited vibrational level differ from 278.0 cm-1?
2. A gas at 300 K and 1 bar (state 1) flows through an adiabatic compressor and exits at 20 bar and 700 K (state 2). The gas obeys the following equation of state, where a and B are constants. v-B The values are given as a = 10-3 _m³k bar mol the gas at 1 bar is Cp = 30 mol K RT ар + P T and B = 8 x 10-5 m³. The heat capacity of mol

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