Stoichiometry Worksheet 2
1. Sodium chloride can be produced by the reaction of sodium and chlorine gas. Write a
balanced equation for this reaction.
Suppose that 6.70 mol Na react with 3.20 mol Cl2.
a) What is the limiting reagent?
b) How many moles of NaCl are produced?
2. The equation for the complete combustion of ethane, C2H4, is
C2H4 (g) + O2 (g) CO2 (g) + H2O (g)
Balance the equation. If 2.70 mol C2H4 is reacted with 6.30 mol O2,
a) identify the limiting reagent.
b) calculate the moles of water produced.
3. Copper and sulfur combine to form copper (I) sulfide.
2 Cu (s) + S(s) Cu2S (s)
a) What is the limiting reagent when 80.0 g Cu reacts with 25.0 g S?
b) What is the maximum number of grams of Cu2S that can be formed?
