Consider the reaction between sulfur trioxide and water:
SO3(g) + H2O(l) → H2SO4(aq)
A chemist allows 61.5 g of SO3 and 11.2 g of H2O to react. When the reaction is finished, the chemist collects 54.9 g of H2SO4. Determine the limiting reactant, theoretical yield, and percent yield for the reaction.
Step 1 :
The limiting reactant in a chemical reaction is the substance that is totally consumed when the chemical reaction is complete, i.e a reactant that is completely used up in a reaction, and thus determines when the reaction stops.
The theoretical yield in a chemical reaction is the amount of product that would be produced in a complete reaction. It is calculated by balancing the reaction and determining the ratio of reactant to the product.
Percent yield is the ratio of the actual yield to the theoretical yield.
Percent yield = 100
The actual yield is a product that is obtained by experimentation