Finding the Limiting Reactant When Given Mass of Reactants Now that you know how to find the limiting reactant, take a look at this example. Aluminum chloride can be made by reaction aluminum and chlorine: 2Al+3Cl2→2AlCl3 What is the limiting reactant if you have 25 g of Al and 32...
This means that at some point you will use up one of the reactants, and the reaction will stop. This reactant is called the limiting reactant. In the example above, the cookies are the limiting reactant. The other reactant, the one there is plenty of, is called theexcess reactantor...