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Tutor HuntTest QuestionsChemistry QuestionsYear 10 Chemistry Questions

 

Atom Economy (chemistry Only) (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'Atom Economy (chemistry Only)' from the broader topic Quantitative Chemistry. The test is geared towards the AQA exam board style syllabus.
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Below a typical questions that will be covered in this test. You final score will be logged on your account

Which of the following is a correct statement linking atom economy and sustainability?
A small research lab develops a route with atom economy 92% but low yield (30%). Which statement is true?
A student compares two methods to make the same ester: Method 1 (direct esterification) has atom economy 83%, Method 2 (acid chloride route) has atom economy 60%. Which environmental statement is correct?
Which of these design choices will almost always increase atom economy?
If a reaction has an atom economy of 25%, what fraction (by mass) of the reactant atoms becomes waste?
Calculate the atom economy for the reaction N2 + 3H2 ? 2NH3.
Which of the following is the most direct measurement related to atom economy?
A reaction has atom economy 80%. If all other conditions are ideal, which of the following can still be true about the process?
A synthesis route produces 2 g desired product and 6 g waste from a given amount of reactants. What is the atom economy for the desired product?
Why might a company accept a lower atom-economy route for an industrial product?
For the reaction CH4 + 2O2 ? CO2 + 2H2O, what is the atom economy for carbon dioxide as the desired product? (Use Ar: C = 12, O = 16, H = 1.)