Stoichiometry - Percentage yield and purity
Stoichiometry is a branch of chemistry that deals with the quantitative relationships between reactants and products in chemical reactions. Percentage yield and purity are two important concepts in stoichiometry that help assess the efficiency and quality of a chemical reaction. Percentage Yield: Definition: Percentage yield is a measure of the efficiency of a chemical reaction. It is the ratio of the actual yield (the amount of product obtained in a reaction) to the theoretical yield (the maximum amount of product that could be obtained under ideal conditions), expressed as a percentage. Formula: Percentage Yield = (Actual Yield / Theoretical Yield) x 100% Example: Consider the reaction between hydrogen gas (H₂) and oxygen gas (O₂) to form water (H₂O): 2H₂(g) + O₂(g) \rightarrow 2H₂O(g) 2 H 2 ( g ) + O 2 ( g ) → 2 H 2 O ( g ) If you start with 10 moles of hydrogen and 5 moles of oxygen, theoretically, you could produce 10 moles of water. However, if, due to experi...