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Atom economy of a reaction is the proportion of the

  • A.theoretical yield actually obtained in practice
  • B.reactants that dissolve in the chosen solvent
  • C.product that can be recovered by crystallisation
  • D.reactant mass that ends up in the desired product

Answer: D

It is computed from the balanced equation alone and is fixed by the chemistry chosen, whatever the operator does. Percentage yield measures how well the reaction was run; atom economy measures whether it was the right reaction.

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