Atom economy
AQA GCSE Chemistry calculation · part of the free Calculation Climb
The percentage of the reactant mass that ends up as the useful product.
How to do it — step by step
- atom economy = (Mr of useful product ÷ total Mr of all products) × 100.
Worked example
CuCO3 → CuO + CO2, useful product CuO. Mr: CuO = 79.5, CO2 = 44.
= 79.5 ÷ (79.5 + 44) × 100 = 64.4%
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