STOICHIOMETRY REVIEW

4 Na + O2  2 Na2O How many moles of sodium will be needed to react with 3.82 moles of oxygen?

15.3 moles Na

4 Na + O2  2 Na2O How many moles of Na2O can be produced from 13.5 mol Na?

6.75 mol

4 Na + O2  2 Na2O How many moles of oxygen are needed to produce 34.7 g Na2O (61.98 g/mol)?

0.280 mol

C2H4 + 3 O2  2 CO2 + 2 H2O When 0.624 mol oxygen are reacted, how many moles of carbon dioxide are produced?

C2H4 + 3 O2  2 CO2 + 2 H2O How many grams of C2H4 (28.06 g/mol) are needed to produce 3.70 moles of water?

51.9 g

C2H4 + 3 O2  2 CO2 + 2 H2O How many grams of oxygen are needed to react with 2.56 g C2H4 (28.06 g/mol)?

8.76 g

2 C (s) + O2 (g)  2 CO Ig) Solid carbon reacts with oxygen gas to produce carbon monoxide gas as shown above. Identify the limiting reactant when 3.25 mol oxygen is reacted with 48.5 g C(12.01 g/mol). How much carbon monoxide can be made?

C is limiting reactant 72.7 g CO

N2 + 3 H2  2 NH3 What is the theoretical yield of NH3 (17.04 g/mol) that can be formed when 10.0 g N2 is reacted with 10.0 g H2?

N2 is limiting 12.1 g NH3 could be produced theoretically

Be + 2 HCl  BeCl2 + H2 Enough Be and HCl were added to produce 10.7 grams of beryllium chloride, but only 4.50 g BeCl2 were actually recovered. What is the percent yield?

42.1 %

2 LiOH + FeCl2  2 LiCl + Fe(OH)2 20.0 g LiOH (23.95 g/mol) was reacted and 31.1 g of LiCl were actually produced. What is the theoretical yield of LiCl (42.39 g/mol) and what is the percent yield?

35.4 g LiCl 87.9%