EOC exercise 19.9 - mistake in solutions manual

[Zellmer, Robert]

Both the solutions manual and MC are incorrect in some way for 19.9.  The solutions
manual uses the wrong eqn for del(G).  They use del(G) = del(G^o) - RT*ln(Q).  That
should be a + sign, del(G) = del(G^o) +  RT*ln(Q).  Even with this mistake, if you order
according to MAGNITUDE they're ordering is correct.

The correct order by magnitude is 1 < 2 < 3.  Since K = 1, del(G^o) = 0.  For Fig 1,
del(G) = 0 since Q=K=1.  For Fig 2, del(G)  = - 2.77 RT (too much reactant to be at
equil. so the reaction is spont. in the forward direction. For Fig 3, del(G) = + 3.89 RT
(too much product to be at equil, so the reaction is nonspont in the forward direction,
but spont. in the reverse direction).

Dr. Zellmer
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