3.3: Yield and atom economy of chemical reactions

Question 1

What is percentage yield and how do you work out percentage yield?

Answer 1

Percentage yield = (amount of product produced / maximum product possible) x100

Yield:​ ​amount​ ​of​ ​product​ ​obtained

Question 2

What is atom economy and how do you work it out?

Answer 2

A​ ​measure​ ​of​ ​the​ ​amount​ ​of​ ​starting​ ​materials​ ​that​ ​end​ ​up​ ​as​ ​useful​ ​products

=​ ​(Mr​ ​of​ ​desired​ ​product​ ​from​ ​reaction​ ​/​ ​sum​ ​of​ ​Mr​ ​of​ ​all​ ​reactants)​ ​x​ ​100