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Comments re Chapter 14 Problems:

14-12	Another T/F exercise.
14-14	Use of DfG^o data to calculate DrxnG^o, which is then converted to an E^o value. An important point of this problem is the relationship between the magnitudes of the DrxnG^o and E^o values. An E^o value of 0.5 V corresponds to a large (negative) value of DrxnG^o.
14-15	A small thought problem involving E, E^o, ionic strength, and activity coefficients.
14-31	An exercise in adding two half-cell E^o values together to get an E^o value for a third half-reaction. The answer obtained by simply summing the two E^o values for the two half-reactions given is wrong because E^o values are intensive and so cannot be added together the way extensive values can. Convert each E^o value to a DG^o value using DG^o = -nFE^o, add the DG^o values, and then convert back to an E^o value
14-32	Estimation of the voltage for a simple cell from E^o values and from activity coefficients estimated using the Davies equation. (Knowing that the E° value for the cell, which is the Daniell cell, is 1.101 V will save time).
14-41	Problem in which the Ksp for PbI2 is determined from E^o values.
14-68	A problem that shows (1) that the pH of a 0.100 m solution of HCl in water is not 1.00, and (2) that the value calculated from the Davies-equation approximation of the activity coefficient is very close to the measured value.

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