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15 Cards in this Set
- Front
- Back
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Atom Economy |
Percentage of reactants forming useful products, as more than one product is produced 100% atom econ |
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100% atom economy |
That all the atoms in the reactant have been turned into a desired productform |
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Formula Atom Economy |
(Relative formula mass if desired product / relative formula mass of all reactants) x 100 |
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Atom economy and environment |
The higher the atom economy the greener the process, because less is wasted |
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Low atom economy and environment |
Use resources very quickly and lots of waste materials. Unsustainable reactions —> raw materials are non renewable Not profitable |
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Percentage Yield |
Compares actual and theoretical yield |
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Yield |
Amount of product |
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The more reactant you start with.... |
The higher the actual yield |
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Formula Percentage Yield |
(Mass of products actually made / maximum theoretical mass of product) x 100 |
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100% percentage yield |
Means you get all the product you expected to get |
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0% percentage yield |
No reactants are converted into products |
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Why should you have a high percentage yield |
To reduce waste and costs during the industrial process |
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Why is percentage yield never 100 |
Not all fully completed reactions Side reactions Product loss Reversible reactions |
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Percentage Yield - Side Reactions |
React differently to expectation React with gases or impurities
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Product loss - percentage yield |
Filter liquid some is left Transfer between containers ^left on the inside surface of the container |
