Calculating Yield and Percentage Yield in Chemical Reactions

The video discusses two important quantities in chemistry, yield and percentage yield, which are used to determine the effectiveness of a chemical reaction. The video also mentions the concept of atom economy, which measures the amount of starting materials that end up as useful products in a reaction. The application of these concepts is illustrated through examples involving reactions of copper oxide and copper carbonate with hydrochloric acid to produce copper chloride and water. The video highlights reasons why the percentage yield may not reach the maximum theoretical amount, such as incomplete reactions or unexpected reactions due to impurities.