Atom economy (Edexcel GCSE Chemistry): Flashcards
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12 cards from this deck
What is atom economy?
What is atom economy?
A measure of how much of the starting materials end up as useful products
What does high atom economy mean?
What does high atom economy mean?
Less waste, more efficient and environmentally friendly
Formula for atom economy
Formula for atom economy
( rac{Mr ext{ desired}}{Mr ext{ all products}}) imes 100
Mr of ethanol in fermentation example
Mr of ethanol in fermentation example
92
Atom economy of glucose fermentation
Atom economy of glucose fermentation
51%
Atom economy of ethene hydration
Atom economy of ethene hydration
100%
What is theoretical mass?
What is theoretical mass?
Maximum amount of product from reactants assuming perfect reaction with no losses
Steps to calculate theoretical mass
Steps to calculate theoretical mass
Balance equation, find moles, use ratio, convert to grams
Mr of
Mr of
2
Mr of
Mr of
18
Theoretical mass of from 8g
Theoretical mass of from 8g
72 grams
Atomic mass of hydrogen
Atomic mass of hydrogen
1