August 28th, 2008
3.1 What is the largest mass of Cl2 that could be prepared from the reaction of 15.0 g of MnO2 and
M 30.0 g of HCl according to the following equation?
MnO2 + 4HCl ® MnCl2 + Cl2 + 2H2O
A. 0.82 g B. 5.8 g C. 12.2 g D. 14.6 g E. 58.4 g
3.2 Ammonia reacts with diatomic oxygen to form nitrogen oxide and water vapor:
4NH3 + 5O2 ® 4NO + 6H2O
When 40.0 g NH3 and 50.0 g O2 are allowed to react, which is the limiting reagent?
A. NH3 B. O2 C. neither
3.3 When 22.0 g NaCl and 21.0 g H2SO4 are mixed and react according to the equation below, which
M is the limiting reagent?
2NaCl + H2SO4 ® Na2SO4 + 2HCl
A. NaCl B. H2SO4 C. Na2SO4 D. HCl E. Neither reagent is limiting.
3.4 Hydrochloric acid can be prepared by the following reaction:
2NaCl(s) + H2SO4(l) ® 2HCl(g) + Na2SO4(s)
How many grams of HCl can be prepared from 2.00 mol H2SO4 and 150 g NaCl?
A. 7.30 g B. 93.5 g C. 146 g D. 150 g E. 196