Question

What are some reasons for low percent yield?

a) Incomplete reaction
b) Impurities in reactants
c) Side reactions
d) Loss of product during isolation

Answer 1

Some reasons for low percent yield include incomplete reaction, impurities in reactants, side reactions, and loss of product during isolation.

Step-by-step explanation:

The reasons for low percent yield include:

1. Incomplete reaction: When a reaction does not proceed to completion, it results in a lower yield of the desired product. This can happen due to factors such as insufficient time, reactant concentration, or temperature.
2. Impurities in reactants: If the reactants used in a reaction contain impurities, those impurities can interfere with the reaction and lower the yield of the desired product.
3. Side reactions: Sometimes, reactions can undergo additional side reactions that produce unwanted products. These side reactions reduce the yield of the desired product.
4. Loss of product during isolation: During the process of isolating the product from the reaction mixture, some product may be lost due to factors such as incomplete separation or filtration.