IB Chemistry SL 2.1.5 Atom Economy Questions
Use real SL exam reactions to calculate atom economy and explain how product composition affects chemical waste.
- Syllabus
- First assessment 2025
- Course
- Chemistry SL
- Level
- SL
Exam points
- Calculate atom economy as the mass of the desired product divided by the total mass of reactants in the balanced equation, multiplied by 100%.
- Apply stoichiometric coefficients and relative atomic masses to compare atom economy for extraction, oxidation, polymerization or organic reactions.
- Recognize when all reactant atoms enter the desired product and explain why that gives 100% atom economy or minimizes waste.
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IB Chemistry SL 2.1.5 Atom Economy Questions question 1
Phenylethene (styrene) is produced from ethylbenzene in a gas-phase equilibrium.
Calculate the atom economy of the reaction.
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