1. What Is Percentage Yield?

Percentage yield is a measure of the efficiency of a chemical reaction. It compares the actual amount of product obtained from a reaction (actual yield) to the maximum possible amount that could be produced (theoretical yield) based on stoichiometric calculations.

2. How Does The Calculator Work?

The calculator uses the percentage yield formula:

Where:

• Actual Yield — The amount of product actually obtained from the reaction (g)
• Theoretical Yield — The maximum amount of product that could be obtained from the reaction based on stoichiometry (g)

Explanation: The formula calculates what percentage of the theoretically possible product was actually obtained in the experiment.

3. Importance Of Percentage Yield Calculation

Details: Percentage yield is crucial for evaluating reaction efficiency, optimizing chemical processes, calculating economic viability of reactions, and identifying potential sources of product loss in industrial and laboratory settings.

4. Using The Calculator

Tips: Enter both actual and theoretical yields in grams. Both values must be positive numbers. The calculator will compute the percentage yield.

5. Frequently Asked Questions (FAQ)

Q1: Why is percentage yield important in chemistry?
A: It helps chemists evaluate the efficiency of reactions, identify sources of product loss, and optimize reaction conditions for better results.

Q2: What is a good percentage yield?
A: While 100% is ideal, most reactions have yields between 70-90%. Yields below 50% often indicate significant problems with the reaction or procedure.

Q3: What factors can affect percentage yield?
A: Incomplete reactions, side reactions, purification losses, measurement errors, and experimental technique can all affect the final yield.

Q4: How is theoretical yield calculated?
A: Theoretical yield is calculated using stoichiometry based on the limiting reactant in the balanced chemical equation.

Q5: Can percentage yield exceed 100%?
A: No, a yield over 100% typically indicates measurement errors, impure products, or incomplete drying of the product.