Flashcards in Precentage Yield And Am Economy Deck (11):
What does 100% yield mean?
Means that no product has been lost
What does 0% yield mean?
Means that no product has been made
Recognise possible reasons why the percentage yield of a product is less than 100%
Loss in filtration
Loss in evaporation
Loss in transferring liquids
Not all reactants react to make product
What is atom economy?
A way of measuring the amount of atoms that are wasted when manufacturing a chemical
What does 100% atom economy mean?
Means that all atoms in the reactant have been converted to the desired product
What does it mean if you have a high atom economy?
It means that the more 'greener' the process is
Equation for percentage yield
Percentage yield = actual yield / percentage yield X100
Explain why an individual process wants as high as percentage yield as possible?
- reducing the reactants wasted
- reducing cost
Explain why an industrial process wants as high an atom economy as possible
To reduce the production of unwanted products
To make the process more sustainable
Equation for atom economy
Atom economy = Mr of desired products / sum of Mr of all products X100