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Limiting Reactant In A Chemical Equation

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In a chemical equation, there are the reactants, which is the part that is changed, and the products, which is what is left over. The reactant side and the product side must have the same quantity of each element. If they do not, the equation must be balanced by using coefficients. Mole ratios can be found by using these coefficients. Mole ratios are conversion factors and can be used to found the amounts of the reactants and the products in a chemical reaction. These can also be used to find the limiting reactant. A limiting reactant is the reactant that is used up and limits the amount of products formed. The other kind of reactant is the excess reactant, which is the reactant that is left over and not used up fully. To determine which reactant is which, the chemical equation must be balanced. …show more content…
Whichever reactant results in the smallest amount for the product is the limiting reactant, and the number itself is the theoretical yield. The theoretical yield is the maximum amount produced from a balanced chemical equation based on 100% efficiency. The actual yield is the amount that is actually produced in lab. To find the percent yield, divide the actual yield by the theoretical yield and multiply that by one hundred. In this lab we will use the steps listed above to find the mass of the precipitate is formed from a double replacement chemical reaction. The two reactants chosen for the lab are Lead (II) Nitrate and Sodium Sulfate which produces a precipitate, Lead (II)

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