LImiting reactant homework flashcard

Front

What is a limiting reactant?

Back

The reactant that determines how much product can be made.

Front

If you have 10 pieces of bread, 4 tablespoons of peanut butter, and 20 tablespoons of jelly, what is the limiting reactant for making a sandwich?

Back

Peanut butter.

Front

In the reaction C10H8 + 12 O2 → 10 CO2 + 4 H2O, if 12 moles of O2 reacts with 1.1 mole of C10H8, what is the limiting reactant?

Back

Oxygen.

Front

In the reaction P4 + 3O2 → P4O6, what is the limiting reactant if 12 moles of P4 react with 15 moles of O2?

Back

O2.

Front

When does a chemical reaction stop?

Back

When the limiting reactant is used up.

Front

Define excess reactant.

Back

The reactant that is not completely consumed in a chemical reaction.

Front

What is the relationship between limiting reactants and product yield?

Back

The amount of product formed is directly related to the limiting reactant.

Front

How can you identify the limiting reactant in a chemical reaction?

Back

By calculating the amount of product each reactant can produce and identifying the one that produces the least.

Front

What happens to the excess reactant in a reaction?

Back

It remains unreacted after the limiting reactant is consumed.

Front

In a balanced chemical equation, what does the coefficient represent?

Back

The number of moles of each substance involved in the reaction.