5.5 [ Yield of reaction. Atom economy]

Question 1

What is the reasons why the mass of a reaction product may be less than the maximum possible?

Answer 1

The reaction may be reversable and so may not be complete.
There are side reaction that lead to other products that are not wanted.
The product may need to be purified which may result in loss of products.

Question 2

What are the 3 types of yield referred to

Answer 2

Actual yield
Theoretical yield
Percentage yield

Question 3

What is the theoretical yield?

Answer 3

Theoretical yield in a reaction is the maximum possible mass of a product assuming complete reaction and no loses.

Question 4

What is actual yield?

Answer 4

The actual yield in a reaction is the actual mass obtained.

Question 5

What is the percentage yield?

Answer 5

Percentage yield is 100 x the actual yield / by theoretical yield

Question 6

What is the atom economy?

Answer 6

Atom economy is the molar mass of the desired product / by the sum of the molar masses of all of the products expressed as a %