Chromium in it's +VI oxidation state is considered a hazardous, carcinogenic species, destruction of which may be accomplished by the process symbolized as:
4Zn + K2Cr2O7 + 7H2SO4 ---> 4ZnSO4 + 2CrSO4 + K2SO4 + 7H2O
If 1.0 mol of each reactant is mixed, what is the limiting reagent, and what is the theoretical yield of chromium (II) sulfate?