Q19 / 150 · MHT CET 2021 (24 Sep Shift 2) · Chemistry

What is percentage atom economy during conversion of reactant to product if formula weight of reactants is $246 \mathrm{u}$ and of product is $123 \mathrm{u}$ ?

  • A
    $40.00 \%$
  • Correct answer
    B
    $50.00 \%$
  • C
    $47.00 \%$
  • D
    $21.5 \%$

Solution

Atom economy is the conversion efficiency of a chemical process in terms of all atoms involved and the desired products produced. $\begin{aligned} & \% \text { Atom economy }=\frac{\text { Formula weight of desired product }}{\text { Sum of formula weight of allreactant }} \times 100 \\ & =\frac{123}{246} \times 100 \\ & =50 \% \end{aligned}$

Hence, the correct answer is option: 'B'.

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