Login
Login
Login
Register

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.
Start Test
Incorrect: 0
Correct: 0
Question 1
...
Congratulations - you have completed the test!
Your final score was

Below a typical questions that will be covered in this test. You final score will be logged on your account

A chemist reports an atom economy of 95% for producing a fine chemical. Which of the following is a realistic implication?
Why is high atom economy important in green chemistry?
A reaction has atom economy 80%. If all other conditions are ideal, which of the following can still be true about the process?
Calculate the atom economy for the reaction N2 + 3H2 ? 2NH3.
Consider reaction A ? desired product + inert by-product. If you can redesign the synthesis to use a different reagent so that the by-product becomes part of the desired molecule, what happens to atom economy?
Which of the following strategies commonly increases atom economy of a synthesis?
If a reaction has an atom economy of 25%, what fraction (by mass) of the reactant atoms becomes waste?
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.)
Which of these design choices will almost always increase atom economy?
Which reaction has the higher atom economy for the desired product NH4NO3: A: NH3 + HNO3 ? NH4NO3 ; B: NH4Cl + AgNO3 ? NH4NO3 + AgCl ?
Which of the following best explains why atom economy is different from percentage yield?