Consider the five balanced chemical reactions listed below, all using O2 as a reactant. Normally, O2 is an excess reagent for reactions because there is a large amount of it available in the air. Suppose for this question that you have 4.9 moles of O2 and 6.9 moles of any of the other reactants in every equation. Select those equations below in which O2 would be the limiting reactant.
Choose one or more:
A. O2(g) + 2 CH3OH(l) → 2 HCOOH(l) + 2 H2O(l)
B. 2 SO2(g) + O2(g) → 2 SO3(g)
C. ZnS(s) + 2 O2(g) → ZnSO4(s)
D. C(s) + O2(g) → CO2(g)
E. None because in all the reactions the O2 is in excess.
F. N2(g) + O2(g) → 2 NO(g)
