C3:Atom economy and percentage yield (HT)

Question 1

what is atom economy

Answer 1

the percentage amount of how much useful product will be made in a reaction

Question 2

what is the equation for atom economy?

Answer 2

atom economy = Mr of desired products / Mr of all reactants * 100

Question 3

why is it better to have a high atom economy?

Answer 3

more cost effective and profitable
more sustainable - less waste products
less waste, which can be harmful and expensive to get rid of

Question 4

what are other factors to consider as well as atom economy when coming up with a reaction?

Answer 4

percentage yield
rate of reaction
is it reversable
energy cost
cost of reactants
environmental impacts

Question 5

what is the yield?

Answer 5

the amount of product you get from a reaction

Question 6

what is the theoretical yield?

Answer 6

the amount you expect. this is calculated using the molar ratio

Question 7

what is the actual yield?

Answer 7

the amount you actually get

Question 8

what is the equation for % yield?

Answer 8

percentage yield = actual yield / theoretical yield * 100

Question 9

why do we not always get the theoretical yield?

Answer 9

incomplete reaction
reviersable reaction
side reaction / waste product
product/reactant lost