Calculate AG (at 298K) for the reaction: 2CR2+ (aq) + 2H+ (aq) 2 2C13+ (aq) + H2 (g) At pH = 2.5 (pH = -log[H*]) and in which [Cr2*] = [Cr3+]=1.0 M; and E of Cr3+/Cr2+ = -0.41 V Hints: 1. Search for # of e- involved in the reaction 2. Determine [H*] with pH value given I 3. Calculate the cell potential Ecut with the Nerst equation 4. Use equation 1 to calculate AG energy

Calculate AG (at 298K) for the reaction: 2CR2+ (aq) + 2H+ (aq) 2 2C13+ (aq) + H2 (g) At pH = 2.5 (pH = -log[H]) and in which [Cr2] = [Cr3+]=1.0 M; and E of Cr3+/Cr2+ = -0.41 V Hints: 1. Search for # of e- involved in the reaction 2. Determine [H*] with pH value given I 3. Calculate the cell potential Ecut with the Nerst equation 4. Use equation 1 to calculate AG energy

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter23: Potentiometry

Section: Chapter Questions

Problem 23.23QAP: The following cell was found to have a potential of —0.492 V: Ag|AgCl(sat’d)||HA(0.200 M),NaA(0.300...

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