To express the efficiency of a reaction you can calculate the percent yield using this formula. Balance the equation below for the combustion of propane. Lets walk through the steps now.
Complete stoichiometry calculations for each ingredient to determine the theoretical yield.
In theory therefore if all C 6 H 6 were converted to product and isolated 246 grams of product would be obtained 100 percent yield. If 180 grams were actually produced the percent yield could be calculated. This video shows you how to calculate the theoretical and percent yield in chemistry. Part 1 Finding the Limiting Reactant.