More Stoichiometry

Its still fun to say. Besides that though we can also use stoic. to tell which reactant (if there is multiple) is the limiting factor and which one will have excess in the equation. This will help us get the proper yield and understand how the reaction works. The limiting factor wil only be needed to be found if the problem gives you more than one reactants mass. If the equation gives 2 or more masses then you must do the standard Stoic. equation on both reactants to find the same product. Whichever reactant yields the least amount of product is the limiting factor and gives the theoretical yield. This forces the other reactant to be the excess. To find the amount of excess used in the reaction you must take the proven theoretical yield and find the mass used of the excess by using the standard stoic. equation on the product.