CHM 2046C Module 14 Pretest#1 Name: __Sample_____

Part G: Electrochemical Determination of pH 10 points

Nernst Equation:

E = E^o – RT/nF [ln Q] or E = E^o - 2.303RT/nF [log Q]

Or E = E^o – 0.0592 V/n [log Q] in volts at 25^oC

Standard Cell Potential and the Equilibrium Constant:

E^o =0.0593 V/n [log K] in volts at 25^oC

R = 8.31451 J / K∙mol F = Faraday Constant = 9.6485309 x 10⁴ J/V∙mol

Worked Example 17.8

Worked Example from Another text: