1. Identify the chemical species present in the solution poured into the beaker
on the left in the movie.
The solution on the left is labeled Fe(NO3)3 solution.
Fe(NO3)3 is the formula of an ionic substance. The solution
apperas clear and colorless, possibly a slight yellowish in color. Since Fe(NO3)3
is ionic the solution contains the corresponding ions; Fe3+ and NO3-.
This solution contributes the Fe3+ in the chemical equation above.