Questions to consider include:
You can either select from a predefined mechanism or write your own.
At a minimum, indicate "<==>" for reversible steps
and "--->" for irreversible steps. Clicking on 'check' will
fill in the rest of the needed values, at least with default values.
Blanks ARE important and represent the end of a formula.
So if you mean "Fe+2 + V+2" don't write "Fe+2+V+2".
The program isn't THAT smart!
Note that rate constants (kn and k-n) should be
between 0 and 1 here, as 'dt' is 1 second for this simulation, and larger numbers
will result in too fast of a reaction. To indicate that a concentration should
remain constant, add "(constant)" immediately after its value.