C3e-percentage Yield And Atom Economy Flashcards
What does 100% yield mean?
No product has been lost
What does 0% yield mean?
No product has been made
Why could percentage yield of a product be less than 100%?
Loss in filtration
Loss in evaporation
Loss in transferring liquids
Not all reactants react to make product
What is the formula for percentage yield?
Actual yield/ predicted yield x 100
Why does an industrial process want a high percentage yield as possible?
Reducing the reactants wasted
Reducing cost
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?
All atoms in the reactant have been converted to the desired product
The higher the economy the greener the process
What is the formula for atom economy?
Mr of desired products/ sum of Mr of all products x100
Why does an industrial process want a high atom economy as possible?
To reduce the production of unwanted products
To make the process more sustainable
What is percentage yield?
A way of comparing amount of product made to amount expected
