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 to the maximum possible amount (theoretical yield) that could be produced under ideal conditions.

2. How Does the Calculator Work?

The calculator uses the percentage yield formula:

Where:

• Actual Yield — The actual amount of product obtained from the reaction (g)
• Theoretical Yield — The maximum possible amount of product that could be produced (g)

Explanation: The formula calculates what percentage of the theoretical maximum was actually achieved in the reaction.

3. Importance of Percentage Yield Calculation

Details: Percentage yield is crucial for evaluating reaction efficiency, optimizing reaction conditions, calculating production costs, and assessing the environmental impact of chemical processes.

4. Using the Calculator

Tips: Enter both actual yield and theoretical yield in grams. Both values must be positive numbers, and theoretical yield must be greater than zero for valid calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is a good percentage yield?
A: In industrial processes, yields above 90% are typically considered excellent. In research settings, yields vary widely depending on the reaction complexity.

Q2: Why is percentage yield never 100%?
A: Several factors can reduce yield, including incomplete reactions, side reactions, product loss during purification, and measurement errors.

Q3: What's the difference between actual yield and theoretical yield?
A: Theoretical yield is calculated from stoichiometry, while actual yield is measured from the experiment.

Q4: Can percentage yield exceed 100%?
A: Normally no. If it does, it suggests measurement errors, impure products, or incorrect theoretical yield calculation.

Q5: How can I improve percentage yield?
A: Optimize reaction conditions (temperature, concentration, catalysts), minimize side reactions, and improve purification techniques.