Atom economy (Edexcel GCSE Chemistry Combined Science): Flashcards
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What is atom economy?
What is atom economy?
Measure of reactants ending up as useful products
Benefit of high atom economy
Benefit of high atom economy
Less waste, more efficient, environmentally friendly
Formula for % atom economy
Formula for % atom economy
of ethanol in fermentation example
of ethanol in fermentation example
92
% atom economy in glucose fermentation to ethanol
% atom economy in glucose fermentation to ethanol
51%
% atom economy in hydration of ethene
% atom economy in hydration of ethene
100% (no atoms wasted)
What is theoretical mass?
What is theoretical mass?
Max product from reactants assuming perfect reaction
What does theoretical mass assume?
What does theoretical mass assume?
Perfect reaction with no losses or side reactions
First step to calculate theoretical mass
First step to calculate theoretical mass
Use balanced chemical equation for mole ratio
Formula to calculate moles
Formula to calculate moles
of
of
2
of
of
18
Theoretical mass of from 8g (with excess )
Theoretical mass of from 8g (with excess )
72 g
Mole ratio of to in
Mole ratio of to in
1:1