Love123443
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Whats the actual difference between the atom economy and percentage yield? Aren't they the same? I dont understand how a reaction can have a high percentage yield but a low atom economy? Shouldnt it have a high percentage yield and high atom economy?
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ionicbond
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(Original post by Love123443)
Whats the actual difference between the atom economy and percentage yield? Aren't they the same? I dont understand how a reaction can have a high percentage yield but a low atom economy? Shouldnt it have a high percentage yield and high atom economy?
percentage yield is = actual amount/theoretical amount. its the percentage that is acc made in real life, rather than what the maths says it will. atom economy is how much waste there is during a real reaction, mass of desired/mass of total. it shows how well a reaction makes the thing you need.

for example, if i want to make ch3. molar wise, it tells me I'm going to make 5 moles of it. but i only make two. this is low percentage yield. but if the reaction is

c + h2= ch3, it will have high atom economy because ch3 is the only thing i made. rather than

c + h2= ch2, ch4, ch3, h20
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