Percentage Yield and Atom Economy

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What is percentage yield a measure of?
Success of a laboratory preparation, as in the efficiency of the preparation
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What is equation to find percentage yield?
(Actual yield/theoretical yield) x 100
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What is theoretical yield?
Amount of moles/grams you are expecting to get out of an experiment
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What is actual yield?
Amount of the moles/grams you actually get out of an experiment
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What is typical percentage yield of an organic reaction?
40-80%
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What is a benefit of having a high percentage yield?
Not wasting Raw material
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What reagent do we use to calculate theoretical yield?
Limiting reagents
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What is atom economy a measure of?
Efficiency of a reaction in terms of the atoms involved
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What two things does atom economy take into account?
Desired product and by-products formed also
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What is equation of atom economy?
(Mr of desired product/ sum of Mr of all products) x 100
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what is a benefit of a high atom economy?
Less waste products
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What reactions have 100% atom economy and why?
Addition as there is only one product
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What is a way to increase atom economy?
Find uses for by-products
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What do you need to consider when considering the efficiency of a reaction?
Atom economy and percentage yield
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Card 2

Front

What is equation to find percentage yield?

Back

(Actual yield/theoretical yield) x 100

Card 3

Front

What is theoretical yield?

Back

Preview of the front of card 3

Card 4

Front

What is actual yield?

Back

Preview of the front of card 4

Card 5

Front

What is typical percentage yield of an organic reaction?

Back

Preview of the front of card 5
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