2.2.5 Percentage yield and atom economy

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6 Terms

1
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define percentage yield

how much product you get of the expected amount [actual vs theoretical]

2
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percentage yield formula

yield actually obtained / theoretical yield x 100

3
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list ways that yield can be lost during a reaction

  • mechanical transfer [with containers]

  • separation techniques [e.g. filtration]

  • side reactions

  • not reaching completancy

4
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define atom economy

how efficiently atoms are used up in chemical reactions

5
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atom economy formula

Mr or mass desired products / Mr or mass all reactants x 100

6
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list benefits of a high atom economy

  • conforms to green chemistry as prevent waste and reduce energy demands which is good environmentally

  • reduces production costs which is good economically