The concentration and volume of reagents combined in each trial are listed in the table below:

Question

Trial 00020 M 00020 M H2O(mL)
Fe(NO3)3(mL) KSCN (mL)
1 5 2 3
2 5 3 2
3 5 4 1
4 5 5 0

Initially (right after combining and before any reaction occurs) the concentration of Fe3+ in trial 2 is
____ M.

Answer 1

I can't make heads or tails of the post. We have a tough time spacing on these boards. In general, however, calculate (Fe^+3) from mols in the solution (molarity x L) and divide that by total volume of the diluted solution.