Percentage Yield + atom economy

Question 1

What is percentage yield?

Answer 1

= how much of the reactant of a reaction actually formed the product
= barley 100%

Question 2

What reasons are there for the percentage yield to not be 100%?

Answer 2

= side reactions
= closed system NOT
= bi products are formed
= equliaberian
= reversible reaction

Question 3

How do we calculate the percentage yield?

Answer 3

Yield actually formed/ maximum theoretrical yield

Question 4

What is atom economy?

Answer 4

= what percentage of mass of the reactant atoms ends up the desired product.

Question 5

What is the equation?

Answer 5

= mr of the desired product/ mr of the all reactants x 100

Question 6

What can the waste product of a reaction be used for?

Answer 6

= starting material for another reaction
= increases overall stabaility.

Question 7

What can be taken account when using the atom economy equation?

Answer 7

= chemical reaction
= assumes percentage yield is 100%
= large numbers count

Question 8

If a reaction has 1 product what does this mean?

Answer 8

= atom economy of 100%

Question 9

What does it mean if a reaction has a high atom economy?

Answer 9

= more efficient/sustainable
= less of the mass of the reactants end up as waste products

Question 10

What is another factor that should be taken into account?

Answer 10

= energy use
= if a reaction had a high atom economy but required a large amount of energy input it may be less sustainable with a different reaction with a low atom economy that required less energy