Consider the following electrochemical cell: Pt|H₂(g.p°) | HCl(aq,b) | Hg₂Cl₂(s)| Hg(1) The potential of this cell, in relation to different molalities (b), has been measured with high precision at 25°C. The following results have been obtained: b/mmol.kg¹ E/V I (ionic strength) Yt (DHLL) Y (linear fit) 1.6077 0.60080 3.0769 0.56825 5.0403 0.54366 7.6938 0.52267 10.9474 0.50532 i) Write the half-reactions for the cell, and show the standard potential of each half-reaction. ii) Determine the standard cell potential through simple calculation. iii) Write the cell reaction for this cell. iv) Write the Nernst equation for this cell in terms of molality (b) and the mean activity coefficient (y) of HCI.
Consider the following electrochemical cell: Pt|H₂(g.p°) | HCl(aq,b) | Hg₂Cl₂(s)| Hg(1) The potential of this cell, in relation to different molalities (b), has been measured with high precision at 25°C. The following results have been obtained: b/mmol.kg¹ E/V I (ionic strength) Yt (DHLL) Y (linear fit) 1.6077 0.60080 3.0769 0.56825 5.0403 0.54366 7.6938 0.52267 10.9474 0.50532 i) Write the half-reactions for the cell, and show the standard potential of each half-reaction. ii) Determine the standard cell potential through simple calculation. iii) Write the cell reaction for this cell. iv) Write the Nernst equation for this cell in terms of molality (b) and the mean activity coefficient (y) of HCI.
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter17: Electrochemistry And Its Applications
Section: Chapter Questions
Problem 92QRT
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