Question:
Calculate the percent atom economy when a product of formula weight 175u is obtained using 225u formula weight reactant.
Calculate the percent atom economy when a product of formula weight 175u is obtained using 225u formula weight reactant.
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Chemistry Tip: Higher atom economy means less wastage.
Updated On: Apr 23, 2026
- 70.1%
- 77.7%
- 90.5%
- 95.0%
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The Correct Option is B
Solution and Explanation
Step 1: Use formula:
$$
\text{Atom Economy}=\frac{\text{Mass of desired product}}{\text{Total mass of reactants}}\times100
$$
Step 2: Substitute values: $$ =\frac{175}{225}\times100 $$
Step 3: Calculate: $$ =77.7\% $$
Step 4: Closest option is (B). $$ \therefore \text{Correct option is (B).} $$
Step 2: Substitute values: $$ =\frac{175}{225}\times100 $$
Step 3: Calculate: $$ =77.7\% $$
Step 4: Closest option is (B). $$ \therefore \text{Correct option is (B).} $$
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