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Comments re Chapter 5 Problems:

5-1	A T/F question about standard states.
5-2	Another T/F question.
5-4	Relationship of DrxnH° to the stoichiometry and direction of the reaction. (Review of material from General Chemistry).
5-5	Definition of a formation reaction. (Review of material from General Chemistry).
5-6	Practice writing formation reactions. (Review of material from General Chemistry).
5-8	Definition of a combustion reaction. (Review of material from General Chemistry).
5-15	Calculation of the difference between DrxnH° and DrxnU° for a standard reaction when the volume of non-gas reactants/products is neglected or considered. Please compare values of the two corrections and also the values for DrxnH° and DrxnU°. How important are the differences?
5-16(a)	A simple Hess's Law problem. (Review of material from General Chemistry).
5-19	A slightly more difficult Hess's Law exercise. (Review of material from General Chemistry).
5-24	Calculation of DH^o for a reaction and then correction for a temperature change. (Do only the reaction from part a of problem 5-10.)
5-30	A very short T/F question that emphasizes the limits of applicability of an equation that is easily memorized.
5-39	Calculation of DS^o for a reaction and then correction for a temperature change. (Do only the reaction from part a of problem 5-10.)
5-44	Calculation in two different ways of DG^o for a reaction. (Do only the reaction from part a of problem 5-10.)
5-45	Calculation of the DG^o value for the same reaction but at a different temperature. (Do only the reaction from part a of problem 5-10.)
5-63	Comparisons of S values. (Review of material from General Chemistry).
5-64	Estimation of DH^o and DS^o values from information about the type of reaction. (This topic was also covered in General Chemistry).
5-67	Question that emphasizes the types of measurements that must be made so that a new substance (e.g., C60) can be included in thermodynamic tables.

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