Which from following formulae is a correct formula to determine percent atom economy?

Which from following formulae is a correct formula to determine percent atom economy?
  1. $\%$ Atom economy $=$ Formula weight of product $\times 100$
  2. $\%$ Atom economy $=$ Sum of formula weight of all reactant $\times 100$
  3. $\%$ Atom economy $=\frac{\text { Formula weight of desired product }}{\text { Sum of formula weight of allreactant }} \times 100$
  4. $\%$ Atom economy $=\frac{\text { Sum of formula weight of all reactant }}{\text { Formula weight of desired product }} \times 100$

Solution

Atom economy is the conversion efficiency of a chemical process in terms of all atoms involved and the desired products produced. $\% \text { Atom economy }=\frac{\text { Formula weight of desired product }}{\text { Sum of formula weight of allreactant }} \times 100$

Asked in: MHT CET 2021 (22 Sep Shift 1)

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