Limiting reactants

Front

What is a limiting reactant?

Back

The reactant that determines how much product can be made.

Front

In a sandwich recipe, if you have 10 pieces of bread, 4 tablespoons of peanut butter, and 20 tablespoons of jelly, what is the limiting reactant?

Back

Peanut butter.

Front

What happens to the limiting reactant in a chemical reaction?

Back

It is used up first.

Front

What is the definition of a reactant?

Back

A substance that is consumed in a chemical reaction.

Front

What is the definition of a product in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.

Front

How do you identify the limiting reactant in a reaction?

Back

By comparing the mole ratio of the reactants to the coefficients in the balanced equation.

Front

What is the excess reactant?

Back

The reactant that is not completely used up in a chemical reaction.

Front

If you have 2H2 + O2 -> 2H2O, which is the limiting reactant if you have 3 moles of H2 and 1 mole of O2?

Back

O2 is the limiting reactant.

Front

What is stoichiometry?

Back

The calculation of reactants and products in chemical reactions.

Front

In the reaction 2Na + Cl2 -> 2NaCl, if you have 4 moles of Na and 2 moles of Cl2, which is the limiting reactant?

Back

Cl2 is the limiting reactant.