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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Both the solutions manual and MC are incorrect in some way for 19.9. The solutions<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">manual uses the wrong eqn for del(G). They use del(G) = del(G^o) – RT*ln(Q). That<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">should be a + sign, del(G) = del(G^o) + RT*ln(Q). Even with this mistake, if you order<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">according to MAGNITUDE they’re ordering is correct.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">The correct order by magnitude is 1 < 2 < 3. Since K = 1, del(G^o) = 0. For Fig 1,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">del(G) = 0 since Q=K=1. For Fig 2, del(G) = - 2.77 RT (too much reactant to be at<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">equil. so the reaction is spont. in the forward direction. For Fig 3, del(G) = + 3.89 RT<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">(too much product to be at equil, so the reaction is nonspont in the forward direction,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">but spont. in the reverse direction).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Dr. Zellmer<o:p></o:p></span></p>
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