ACTUAL AND THEORETICAL YIELD - FIRST YEAR CHEMISTRY

Actual and Theoretical Yield

Yield

     The amount of products obtained in a chemical reaction is called yield.

Difference Between Actual and Theoretical Yield

Actual Yield is Less Than Theoretical Yield

    Actual yield is less than theoretical yield due to following reasons.

1. Practically inexperienced worker has many shortcomings and cannot get expected yield.

2. Mechanical loss during experimentation e.g., filtration, separation by distillation, or by a separating funnel, washing, drying and crystallization if not properly carried out, decrease the yield. 

3. Some of the reactants might take part in a competing side reaction. 

4. The reaction might be reversible. 

5. The reactants might be impure. 

6. Sometimes the reaction conditions are not suitably maintained. 

Notes Prepared By: Prof. Shahbaz Asghar