Which choice is greener in a chemical process? Explain.
(a) A reaction that can be run at 350 K for 12 hours without a catalyst or one that can be run at 300 K for 1 hour with a catalyst.
(b) A reagent for the reaction that can be obtained from corn husks or one that can be obtained from petroleum.
(c) A process that produces no by-products or one in which the byproducts are recycled for another process.