The pink color of the regenerated catalyst is visible upon completion of the reaction. 30g potassium sodium tartrate in 400mL distilled water. 50mL of 0.4M CoCl2 (or 95.2g CoCl2.H2O/L) 30mL of 30% ...
Upon completion of the reaction, the solution will return to the pink color of the cobalt chloride catalyst, demonstrating that the catalyst was not consume in the reaction. Goggles should be worn.
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