Chromium in Its +VI Oxidation State Is Considered a Hazardous

Multiple Choice

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

A) Zn, 0.50 mol
B) K₂Cr₂O₇, 2.0 mol
C) H₂SO₄, 0.29 mol
D) H₂, 1.0 mol
E) no limiting reagent, 1.0 mol