Limiting vs Excess Reactants - what's the difference?

The video tutorial explains the concept of limiting and excess reactants in chemical reactions. It uses a cheeseburger analogy to illustrate how to identify the limiting reactant, which is the reactant that runs out first, limiting the amount of product formed. The tutorial also covers how to recognize limiting reactant stoichiometry problems by considering both reactants and determining which one is exhausted first.

What is the role of a limiting reactant in a chemical reaction?

• It is the reactant that is added in excess.

• It is the reactant that remains after the reaction.

• It determines the amount of product formed.

• It speeds up the reaction.

In the cheeseburger analogy, which ingredient was identified as the limiting reactant?

• Buns

• Burger patties

• Cheese

• Tomatoes

How many cheeseburgers can be made with the available ingredients in the example?

• 15

• 10

• 4

• 6

What is a key feature of a limiting reactant stoichiometry problem?

• It always results in excess reactants.

• It requires ignoring one reactant.

• It provides values for both reactants.

• It involves only one reactant.

When solving a limiting reactant problem, what must you determine using a BC table?

• Which reactant runs out first.

• The total mass of the products.

• The speed of the reaction.

• Which reactant is in excess.