Let's mix a solution of sodium thiosulfate, Na2S2O3, with iodine, I2, dissolved in aqueous potassium iodide, KI. The mixture of iodine and potassium iodide makes potassium triiodide. KI3. We will put the triiodide solution in the empty beaker and add some sodium thiosulfate.
K shows a decrease in disorder (AS = -120.7 J/(mol-K)) during an exothermic reaction (AH' = -136.9 kJ/mol). Determine whether the reaction is spontaneous or ...
