Let's do some logic practice. In the lab you added excess sodium hydroxide to chromium nitrate. The reaction quickly and easily went to a chromium complex ion. (and no, the complex-ions don't show in the back thermo tables. You can't calculate these questions.) a) What would you guess is the sign for the change in entropy for this reaction? b) What is the expected sign for the change in free energy for this reaction? c) Finally, what is the expected sign for the change in enthalpy for this reaction?