hot ice part 2

Then after that, I poured it into a container already containing some vinegar, so as to react the remaining sodium bicarobonate, to ensure it is pure. Then I put it into the fridge for about 30 minutes before checking again. I used bits of solid sodium acetate trihydrate that was left behind after the heating and dropped it into the solution.

I did this few steps for many times, but it all failed. Then I changed it into using a ice water bath to cool it, but it still failed. Then, I used some fo the solid sodium acetate trihydrate that had been frozen and dropped it into the solution and it worked! So I found out that the best way to allow the experiment to work was to use the ice water bath and also use frozen bits for sodium acetate trihydrate.