See Periodic Table See Hint Consider the five balanced chemical reactions listed
ID: 558766 • Letter: S
Question
See Periodic Table See Hint 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 have4.3 moles of O2 and6.6 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. None because in all the reactions the O2 is in excess. ie B. ZnS(s) + 2 O2(g) ZnSO4(s) C. N2(g) + O2(g) 2 NO(g) D, 2 SO2(g) + O2(g) 2 SO3(g) E. O2(g) + 2 CH3OH(I) 2 HCOOH(I) + 2 H2O(1) F. o C(s) + O2(g) CO2(g)Explanation / Answer
B. ZnS(s) + 2O2(g) --------> ZnSO4
1 mole of ZnS react with 2 moles of O2
6.6 moles of ZnS react with = 2*6.6/1 = 13.2 moles of O2 is required.
O2 is limiting reactant
C. N2(g) + O2(g) --------> 2NO(g)
1 moles of N2 react with 1 mole of O2
6.6 moles of N2 react with 6.6 moles of O2 is required.
O2 is limiting reactant
D. 2SO2(g) + O2(g) ------> 2SO3(g)
2 moles of So2 react with 1 mole of O2
6.6 moles of So2 react with = 1*6.6/2 = 3.3 moles of O2 is required.
O2 is excess reactant
E. 2CH3OH(l) + O2(g) ------------> 2HCOOH(l) + 2H2O(l)
2 moles of CH3OH react with 1 moles of O2
6.6 moles of CH3OH react with = 1*6.6/2 = 3.3 moles of O2 is required.
O2 is excess reactant
F. C(s) + O2(g) ----------> CO2(g)
1 mole of C react with 1 moles of O2
6.6 moles of C react with 6.6 moles of O2 i srequied
O2 is limiting reactant
B,C,F >>>>>answer