Question

In lab 5. you experimentally determined the mole-to-mole ratios between the reactants and products in two reactions. Then you used stoichiometry to determine your percent yield. At the end of the experiment, after heating you weighed the substance that remained in the evaporating dish. The mass of that product could be described as your choose one experimental yield percent yield theoretical yield

Answer 1

The percent yield of a chemical reaction is given as

Percent yield = ( Experimental yield / Theoretical yield ) × 100 %

The theoretical yield and the percent yield have to be calculated whereas the experimental yield is known by performing the experiment and noting the exact mass of the product obtained at the end of the experiment.

For example in a simple reaction as 2H₂ + O_{​​​​​​2} = 2H₂O , the theoretical yield of the product H_{​​​​​​2}​​O can be calculated by using stochiometry and the concept of limiting reactant. However the experimental yield of H_{​​​​​​2}​​​​​O would be the amount of H_{​​​​​​2}​​​​​O actually produced after performing the reaction. The percent yield is then calculated by using theoretical and experimental yields both.

So at the end of the experiment , after heating , the mass of the product obtained after weighing the substance will be described as the Experimental Yield of the reaction.

Hence the answer to this question is option 1 , experimental yield .