Atom Economy (chemistry Only) (GCSE Chemistry)

Calculate the atom economy for the production of sulfur dioxide from sulfur burning: S + O2 ? SO2. (Use Ar: S = 32, O = 16.)

Which of the following best explains why atom economy is different from percentage yield?

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 is a correct statement linking atom economy and sustainability?

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.)

Two industrial routes produce the same desired product. Route A has atom economy 90%, Route B has atom economy 45%. Assuming similar costs and environmental controls, which route is preferable on atom economy grounds and why?

A balanced equation shows total product mass 250 g and desired product mass 200 g. If the company scales the process so total products formed per batch double, what happens to the atom economy?

Which of the following reactions has the best atom economy for producing water as the desired product?

A small research lab develops a route with atom economy 92% but low yield (30%). Which statement is true?

Ethanol + ethanoic acid ? ethyl ethanoate + water. Calculate the atom economy for ethyl ethanoate (desired product). (Use Ar: C = 12, H = 1, O = 16.)

Why might a company accept a lower atom-economy route for an industrial product?