37.4 g iron (II) chloride in solution was mixed with 42.3 g potassium permanganate in the
presence of acid. The following reaction occurred:
FeCl2 + KMnO4 + HCl → FeCl3 + MnCl2 + KCl + H2O
a1. What mass (g) of iron (III) chloride was produced?
a2. How many moles of HCl were required?
a3. What mass (g) of the excess reactant was not used?
