Tabulated thermodynamic data can be used to predict the standard potential of a cell even if it cannot be measured directly. The standard Gibbs energy of the reaction K2CrO4(aq) + 2 Ag(s) + 2 FeCI3(aq) → Ag2CrO4(s) + 2 FeCI2(aq) + 2 KCI(aq) is -62.5 kJ mol-1 at 298 K. (a) Calculate the standard potential of the corresponding galvanic cell and (b) the standard potential of the Ag2CrO4/Ag,CrO42- couple.

Given: The balanced equation of the reaction is given as, Standard Gibbs energy of the reaction =…

Answered: Tabulated thermodynamic data can be…

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 38QRT

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Tabulated thermodynamic data can be used to predict the standard potential of a cell even if it cannot be measured directly. The standard Gibbs energy of the reaction K₂CrO₄(aq) + 2 Ag(s) + 2 FeCI₃(aq) → Ag₂CrO4(s) + 2 FeCI₂(aq) + 2 KCI(aq) is -62.5 kJ mol^-1 at 298 K. (a) Calculate the standard potential of the corresponding galvanic cell and (b) the standard potential of the Ag₂CrO₄/Ag,CrO₄^2- couple.

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