Percentage yield, actual yield and atom economy 0.0 / 5 ? ChemistryPercentage yield, actual yield and atom economyGCSEOCR Created by: samtruman880Created on: 09-04-17 15:54 what is a "predicted yield"? maximum possible mass of a certain product that could be made 1 of 11 what is a "actual yield"? the mass of product made when the reaction is carried out for real 2 of 11 what is Percentage yield? the percentage yield is how much you made compared to how much you should have made 3 of 11 how do you work out Percentage yield? actual yield / predicted yield x 100 4 of 11 why might you not get 100% yield? does not fully react, filtering, transferring liquid 5 of 11 why does the industrial processes need as high a percentage yield as possible? Reduces the waste of reactants, reduces the cost of the process 6 of 11 what is atom economy? Atom economy is a way to measure the atoms wasted when making a chemical 7 of 11 100% atom economy means....? that all the atoms in the reactants have been converted to the desired product 8 of 11 how do you work out atom economy? Mr of desired products / sum of Mr of all products x 100 9 of 11 Industrial processes need as high an atom economy as possible. Why? Reduces the production of unwanted products, Makes the process more sustainable 10 of 11 What does it mean if you get 0% yield? No product has been made 11 of 11
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