Limiting and Excess Reactant

Multiple Select

Which of the following describes a limiting reactant?

• The reactant that is not completely consumed during a reaction

• None of this reactant is left over after the reaction take place

• The reactant that is completely consumed during the reaction

• Some of this reaction is left over after the reaction

Multiple Select

Which of the following describes an excess reactant?

• The reactant that is not completely consumed during a reaction

• None of this reactant is left over after the reaction take place

• The reactant that is completely consumed during the reaction

• Some of this reaction is left over after the reaction

Multiple Choice

You need 2 pieces of bread, 1 tablespoon of peanut butter and 2 tablespoons of jelly to make a sandwich.  If you have 10 pieces of bread, 4 tablespoons of peanut butter and 20 tablespoons of jelly, what is the limiting reactant?

• bread
• jelly
• peanut butter
• sandwich

Multiple Choice

Identify the limiting and excess reactants in the reaction shown.

• N₂ is limiting and H₂ is excess. 

• H₂ is limiting and N₂ is excess. 

• NH₃ is both limiting and excess.

• There is no limiting reactant. 

Multiple Choice

Draw the products (notes/whiteboard) that can be formed from the reactants shown. Then identify the limiting and excess reactants.

• Fe is limiting and S is excess.

• S is limiting and Fe is excess.

• FeS is both limiting and excess.

• There is no limiting or excess reactants.

Multiple Choice

Hydrogen and nitrogen react as shown to form ammonia (NH3). What is true of this reaction? 

• Three ammonia molecules are formed, with zero molecules remaining.

• Two ammonia molecules are formed, with two hydrogen molecules remaining.

• Six ammonia molecules are formed, with zero molecules remaining.

• Two ammonia molecules are formed, with two nitrogen molecules remaining.